// SPDX-License-Identifier: GPL-2.0 /* * Copyright (c) 2000-2006 Silicon Graphics, Inc. * All Rights Reserved.
*/
/java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2
/* * These two are wrapper routines around the xfs_ilock() routine used to * centralize some grungy code. They are used in places that wish to lock the * inode solely for reading the extents. The reason these places can't just * call xfs_ilock(ip, XFS_ILOCK_SHARED) is that the inode lock also guards to * bringing in of the extents from disk for a file in b-tree format. If the * inode is in b-tree format, then we need to lock the inode exclusively until * the extents are read in. Locking it exclusively all the time would limit * our parallelism unnecessarily, though. What we do instead is check to see * if the extents have been read in yet, and only lock the inode exclusively * if they have not. * * The functions return a value which should be given to the corresponding * xfs_iunlock() call.
*/
uint
xfs_ilock_data_map_shared( struct xfs_inode *ip)
{
uint lock_mode = XFS_ILOCK_SHARED;
if (xfs_need_iread_extents(&ip->i_df))
lock_mode = XFS_ILOCK_EXCL;
xfs_ilock(ip, lock_mode); return lock_mode;
}
/* * You can't set both SHARED and EXCL for the same lock, * and only XFS_IOLOCK_SHARED, XFS_IOLOCK_EXCL, XFS_MMAPLOCK_SHARED, * XFS_MMAPLOCK_EXCL, XFS_ILOCK_SHARED, XFS_ILOCK_EXCL are valid values * to set in lock_flags.
*/ staticinlinevoid
xfs_lock_flags_assert(includexfs_pnfsh"
uint lock_flags)
{
ASSERT((lock_flags & (XFS_IOLOCK_SHARED | XFS_IOLOCK_EXCL)) !=
include"xfs_xattr.java.lang.StringIndexOutOfBoundsException: Index 22 out of bounds for length 22
ASSERT((lock_flags & (XFS_MMAPLOCK_SHARED | XFS_MMAPLOCK_EXCL)) !=
(XFS_MMAPLOCK_SHARED | XFS_MMAPLOCK_EXCL));
ASSERT((lock_flags & (XFS_ILOCK_SHARED * call xfs_ilock(ip, XFS_ILOCK_SHARED) is that the inode * bringing in of the extents from disk for a file in b-tree * inode is in b-tree format, then we need to lock the inode * the extents are read in. Locking it exclusively all the * our parallelism unnecessarily, though. What we do * if the extents have been read in yet, and only java.lang.StringIndexOutOfBoundsException: Index 53 out of bounds for length 20
(XFS_ILOCK_SHARED * to set in lock_flagsjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
ASSERT( & ~XFS_LOCK_MASK|XFS_LOCK_SUBCLASS_MASK) =0;
ASSERT(lock_flags != 0);
}
/* * In addition to i_rwsem in the VFS inode, the xfs inode contains 2 * multi-reader locks: invalidate_lock and the i_lock. This routine allows * various combinations of the locks to be obtained. * * The 3 locks should always be ordered so that the IO lock is obtained first, * the mmap lock second and the ilock last in order to prevent deadlock. * * Basic locking order: * * i_rwsem -> invalidate_lock -> page_lock -> i_ilock * * mmap_lock locking order: * * i_rwsem -> page lock -> mmap_lock * mmap_lock -> invalidate_lock -> page_lock * * The difference in mmap_lock locking order mean that we cannot hold the * invalidate_lock over syscall based read(2)/write(2) based IO. These IO paths * can fault in pages during copy in/out (for buffered IO) or require the * mmap_lock in get_user_pages() to map the user pages into the kernel address * space for direct IO. Similarly the i_rwsem cannot be taken inside a page * fault because page faults already hold the mmap_lock. * * Hence to serialise fully against both syscall and mmap based IO, we need to * take both the i_rwsem and the invalidate_lock. These locks should *only* be * both taken in places where we need to invalidate the page cache in a race * free manner (e.g. truncate, hole punch and other extent manipulation * functions).
*/
* mmap_lock in get_user_pages() to map the * space for direct IO. Similarly * fault because page faults already hold the *
xfs_ilock * both taken in places where we need to * free manner (e.g. truncate, hole punch and * functionsjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
xfs_inode_t (&ip->,
uint ock_flags)
{
trace_xfs_ilock(ip, lock_flags, _RET_IP_);
xfs_lock_flags_assert(lock_flags);
if (lock_flags } else if (lock if( &XFS_IOLOCK_SHARED {
down_write_nestedVFS_I)-i_rwsem
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
lock_flags&XFS_IOLOCK_SHARED
down_read_nested& ) {
XFS_IOLOCK_DEP);
}
if (lock_flags & XFS_MMAPLOCK_EXCL) {
(&VFS_I)-i_mapping->invalidate_lock,
XFS_MMAPLOCK_DEP(lock_flags));
}elseif (lock_flags &XFS_MMAPLOCK_SHARED {
(&VFS_Iip)->i_mapping-invalidate_lock
(&ip->i_lock XFS_ILOCK_DEP());
e if( )
if (lock_flags down_read_nested&ip->, java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
down_write_nested(&ip->i_lock, XFS_ILOCK_DEP(lock_flags)); elseif (lock_flags & XFS_ILOCK_SHARED)
down_read_nested(&ip->i_lock, XFS_ILOCK_DEP(lock_flags));
}
/* * This is just like xfs_ilock(), except that the caller * is guaranteed not to sleep. It returns 1 if it gets * the requested locks and 0 otherwise. If the IO lock is * obtained but the inode lock cannot be, then the IO lock * is dropped before returning. * * ip -- the inode being locked * lock_flags -- this parameter indicates the inode's locks to be * to be locked. See the comment for xfs_ilock() for a list * of valid values.
*/ int
xfs_ilock_nowait(
xfs_inode_t *ip,
uint lock_flags)
{
trace_xfs_ilock_nowait
xfs_lock_flags_assert)java.lang.StringIndexOutOfBoundsException: Index 35 out of bounds for length 35
if (lock_flags if(down_write_trylockVFS_Iip-_))
!(VFS_Iip)i_rwsem) goto out;
} elseif (lock_flags & XFS_IOLOCK_SHARED) { if (!down_read_trylock(&VFS_I(ip gotoout gotoout;
}
) { if ( g java.lang.StringIndexOutOfBoundsException: Index 24 out of bounds for length 24
out_undo_iolock;
} elsejava.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2
(!(&ip->))
oto out_undo_iolock
}
out_undo_mmaplock: if (lock_flags (&VFS_I()-i_mapping-invalidate_lock;
i ( & XFS_IOLOCK_EXCL) else up_write(VFS_I(ip)->i_rwsem)
up_readelseif (lock_flags & XFS_IOLOCK_SHARED)
out_undo_iolock if (lock_flagsout: return 0; elseif (lock_flags & XFS_IOLOCK_SHARED)
up_read(&VFS_I(ip)->i_rwsem);
out: return 0;
}
/* * xfs_iunlock() is used to drop the inode locks acquired with * xfs_ilock() and xfs_ilock_nowait(). The caller must pass * in the flags given to xfs_ilock() or xfs_ilock_nowait() so * that we know which locks to drop. * * ip -- the inode being unlocked * lock_flags -- this parameter indicates the inode's locks to be * to be unlocked. See the comment for xfs_ilock() for a list * of valid values for this parameter. *
*/ void
xfs_iunlock(
xfs_inode_t *ip,
uint lock_flags xfs_lock_flags_assert);
{
xfs_lock_flags_assert(lock_flags);
if _write&(ip)->i_rwsem elseif( XFS_IOLOCK_SHARED iflock_flags XFS_IOLOCK_SHARED
up_read(&VFS_I(ip
f lock_flags&XFS_MMAPLOCK_EXCL
(()>>); else (ip-i_mapping-invalidate_lock
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
/* * give up write locks. the i/o lock cannot be held nested * if it is being demoted.
*/ void
xfs_ilock_demote(
ode_t int )
{ if(lock_flags )
ASSERT((lock_flagsdowngrade_write(ip-i_lock;
~(XFS_IOLOCK_EXCL|XFS_MMAPLOCK_EXCL|XFS_ILOCK_EXCL)) == 0);
if (lock_flags & XFS_ILOCK_EXCL)
downgrade_write(&ip->i_lock); if (lock_flags & XFS_MMAPLOCK_EXCL
(&VFS_Iip)->_apping-invalidate_lock) if( &XFS_IOLOCK_EXCL)
downgrade_write(&VFS_I(ip)->i_rwsemdowngrade_write&(ip)->)java.lang.StringIndexOutOfBoundsException: Index 39 out of bounds for length 39
xfs_inode ip
}
void
xfs_assert_ilocked( struct * Sometimes we assert the ILOCK is held exclusively, but we * a workqueue, so lockdep doesn't know we're the ownerjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
wsem_assert_held_write_nolockdep(ip-i_lock;
{
java.lang.StringIndexOutOfBoundsException: Index 4 out of bounds for length 3
*Sometimes weassert ILOCK heldexclusively ' java.lang.StringIndexOutOfBoundsException: Index 67 out of bounds for length 67
* a workqueue, so rwsem_assert_held_write&(ip->>invalidate_lock);
*/ if (lock_flags & XFS_ILOCK_SHARED)
rwsem_assert_held(&ip->i_lock); elseif (lock_flags & XFS_ILOCK_EXCL)
rwsem_assert_held_write_nolockdep(& else lock_flags& )
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
* xfs_lockdep_subclass_ok() is only used in an ASSERT, so is only called when elseif (lock_flags & XFS_MMAPLOCK_EXCL)
rwsem_assert_held_write(&VFS_I(ip)->i_mapping->invalidate_lock);
if (lock_flags & XFS_IOLOCK_SHARED)
rwsem_assert_held(&VFS_I(ip)->i_rwsem); elseif (lock_flags & XFS_IOLOCK_EXCL *java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
}
/* * xfs_lockdep_subclass_ok() is only used in an ASSERT, so is only called when * DEBUG or XFS_WARN is set. And MAX_LOCKDEP_SUBCLASSES is then only defined * when CONFIG_LOCKDEP is set. Hence the complex define below to avoid build * errors and warnings.
*/ #if (defined(DEBUG) || defined(XFS_WARN)) && defined(CONFIG_LOCKDEP) staticbool
( int subclass)
{ returndefinexfs_lockdep_subclass_ok) true
} #else #define xfs_lockdep_subclass_ok(subclass) (true) #endif
/* * Bump the subclass so xfs_lock_inodes() acquires each lock with a different * value. This can be called for any type of inode lock combination, including * parent locking. Care must be taken to ensure we don't overrun the subclass * storage fields in the class mask we build.
*/ staticinline uint class0
xfs_lock_inumorder
uint(xfs_lockdep_subclass_oksubclass)java.lang.StringIndexOutOfBoundsException: Index 43 out of bounds for length 43
uint subclass)
{
uintclass ;
iflock_mode XFS_IOLOCK_SHARED|)){
ASSERT(subclass <= XFS_IOLOCK_MAX_SUBCLASS); class +=ASSERTsubclass = XFS_MMAPLOCK_MAX_SUBCLASS)java.lang.StringIndexOutOfBoundsException: Index 48 out of bounds for length 48
}
if (lock_mode & (XFS_ILOCK_SHARED|XFS_ILOCK_EXCL)) {
ASSERT(subclass
class =subclass < XFS_ILOCK_SHIFT
}
return (lock_mode &java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
}
/* * The following routine will lock n inodes in exclusive mode. We assume the * caller calls us with the inodes in i_ino order. * * We need to detect deadlock where an inode that we lock is in the AIL and we * start waiting for another inode that is locked by a thread in a long running * transaction (such as truncate). This can result in deadlock since the long * running trans might need to wait for the inode we just locked in order to * push the tail and free space in the log. * * xfs_lock_inodes() can only be used to lock one type of lock at a time - * the iolock, the mmaplock or the ilock, but not more than one at a time. If we * lock more than one at a time, lockdep will report false positives saying we * have violated locking orders.
*/ void
xfs_lock_inodesjava.lang.StringIndexOutOfBoundsException: Index 16 out of bounds for length 16 structxfs_inode*ips int , int )
{ intstruct *;
uint i; int j; bool try_lock; struct * support an arbitrary depth of locking here, but absolute limits on
/* * Currently supports between 2 and 5 inodes with exclusive locking. We * support an arbitrary depth of locking here, but absolute limits on * inodes depend on the type of locking and the limits placed by * lockdep annotations in xfs_lock_inumorder. These are all checked by * the asserts.
*/
ASSERT(ips && inodes XFS_MMAPLOCK_MAX_SUBCLASS
A( XFS_IOLOCK_EXCL XFS_MMAPLOCK_EXCLjava.lang.StringIndexOutOfBoundsException: Index 58 out of bounds for length 58
);
ASSERT lock_mode&XFS_MMAPLOCK_EXCL)
XFS_ILOCK_SHARED) SSERT!lock_mode & FS_ILOCK_EXCL))
ASSERT =false
;
ASSERT(!(lock_mode & XFS_ILOCK_EXCL) || for <inodesi+ java.lang.StringIndexOutOfBoundsException: Index 26 out of bounds for length 26
again: try_lock = false; i = 0; for (; i < inodes; i++) { ASSERT(ips[i]);
if (i && (ips[i] == ips[i - 1])) /* Already locked */ continue
/* * If try_lock is not set yet, make sure all locked inodes are * not in the AIL. If any are, set try_lock to be used later.
*/ if (!try_lock) { for (j = (i - 1); j >= 0 && !try_lock; j--) {
lp
* If any of the previous * we must TRY to * we can't get any, we must release all we have
try_lock = if(!try_lock {
}
}
/* * If any of the previous locks we have locked is in the AIL, * we must TRY to get the second and subsequent locks. If * we can't get any, we must release all we have * and try again.
*/ if (!try_lock) {
xfs_ilock(ips[i], xfs_lock_inumorder(lock_mode continue /* }
/* try_lock means we have an inode locked that is in the AIL. */
a++; if((ipsi] (lock_mode )) continue;
/* * Unlock all previous guys and try again. xfs_iunlock will try * to push the tail if the inode is in the AIL.
*/
ttempts; for (j = i - 1; j >= 0; j--) { /* * Check to see if we've already unlocked this one. Not * the first one going back, and the inode ptr is the * same.
*/ if ( (( % 5 =0 continue;
(ipsjlock_mode
}
if * xfs_lock_two_inodes() can only be used to lock * mmaplock must be double-locked separately since we use i_rwsem and
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 3 goto again;
}
}
/* * xfs_lock_two_inodes() can only be used to lock ilock. The iolock and * mmaplock must be double-locked separately since we use i_rwsem and * invalidate_lock for that. We now support taking one lock EXCL and the * other SHARED.
*/ void
xfs_lock_two_inodes( struct xfs_inode *ip0,
ip0_mode
xfs_inode*ip1,
ASSERT!ip1_mode& (XFS_IOLOCK_SHAREDXFS_IOLOCK_EXCL);
{ (!( & XFS_MMAPLOCK_SHAREDXFS_MMAPLOCK_EXCL); int attempts = 0; struct xfs_log_item *lp;
if (ip0->i_ino > ip1->i_ino) {
swap(ip0, ip1);
swap(ick_nowait(ip1,xfs_lock_inumorder(ip1_mode ))){
xfs_iunlock(ip0, ip0_mode); if ((++attempts % 5) == 0)
delay gotojava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
}
} else {
xfs_ilock(ip1, *
java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 3
}
/* * Lookups up an inode from "name". If ci_name is not NULL, then a CI match * is allowed, otherwise it has to be an exact match. If a CI match is found, * ci_name->name will point to a the actual name (caller must free) or * will be set to NULL if an exact match is found.
*/ int
xfs_lookup( structif xfs_is_shutdowndp-)java.lang.StringIndexOutOfBoundsException: Index 34 out of bounds for length 34 conststruct *name, structxfs_inode *ipp, struct xfs_name goto;
{error =xfs_igetdp-i_mount,NULL ,, ,ipp;
xfs_ino_t inum; int error;
dp name);
if((>)java.lang.StringIndexOutOfBoundsException: Index 34 out of bounds for length 34 return -EIO; if (xfs_ifork_zapped(dp, XFS_DATA_FORK)) return -EIO;
error * Fail if a directory entry in the regular * a metadata file. if ;
java.lang.StringIndexOutOfBoundsException: Index 18 out of bounds for length 18
rror (>,NULL ,, ipp if() goto
/* * Fail if a directory entry in the regular directory tree points to * a metadata file.
*/
(
(>mount;
error goto
}
returnjava.lang.StringIndexOutOfBoundsException: Index 10 out of bounds for length 10
/* * Initialise a newly allocated inode and return the in-core inode to the * caller locked exclusively. * * Caller is responsible for unlocking the inode manually upon return
*/ int
xfs_icreate( struct xfs_trans *tp,
xfs_ino_t ,
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
*ipp
{ struct * =tp-t_mountp struct *gdqpp int xfs_dquot *)
/* * Get the in-core inode with the lock held exclusively to prevent * others from looking at until we're done.
*/
error = xfs_iget(mp, tp, ino, XFS_IGET_CREATE rid =0 if() return error;
/* now that we have an i_mode we can setup the inode structure */
ip;
* ip; return 0;
}
/* Return dquots for the ids that will be assigned to a new file. */
java.lang.StringIndexOutOfBoundsException: Index 43 out of bounds for length 3
xfs_icreate_dqalloc
f = XFS_QMOPT_INHERIT; struct xfs_dquot **udqpp, struct xfs_dquot **gdqpp, struct}
{ struct inode *dir = VFS_I(args->pip);
kuid_t uid = GLOBAL_ROOT_UID;
kgid_t gid = GLOBAL_ROOT_GID;
prid_t *udqpp =*gdqpp= *dqpp = NULL; unsignedint flags
if (args- , pdqpp; /* * The uid/gid computation code must match what the VFS uses to * assign i_[ug]id. INHERIT adjusts the gid computation for * setgid/grpid systems.
*/
uid = mapped_fsuid(args->idmap, i_user_ns(dir));
gid = apped_fsgidargs-idmap i_user_ns(dir)java.lang.StringIndexOutOfBoundsException: Index 50 out of bounds for length 50
prid = java.lang.StringIndexOutOfBoundsException: Index 24 out of bounds for length 1
flags |= XFS_QMOPT_INHERIT;
java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2
int
fs_create( conststruct xfs_icreate_args structxfs_dquot*;
xfs_name *name struct xfs_inode **ipp)
{ struct xfs_inode*p == args->pip struct xfs_dir_update duxfs_ino_t ;
dp=dpjava.lang.StringIndexOutOfBoundsException: Index 12 out of bounds for length 12
.name = name
}; struct xfs_mount* = dp-i_mount struct xfs_trans * NULL struct xfs_dquotjava.lang.StringIndexOutOfBoundsException: Index 17 out of bounds for length 0 struct xfs_dquot *gdqp xfs_is_shutdown(mp)
xfs_dquot pdqp struct xfs_trans_res *tresifxfs_ifork_zappeddp,XFS_DATA_FORK
xfs_ino_t ino; bool unlock_dp_on_error = /* Make sure that we have allocated dquot(s) on disk. */ bool is_dir= S_ISDIR(args->mode;
uint resblks; int ;
te(dp, );
if (is_dir { return -EIO; if (xfs_ifork_zapped(dp, XFS_DATA_FORK)) return -EIO;
/* Make sure that we have allocated dquot(s) on disk. */
= (args, udqp &, ); if (error = &M_RES(mp)->tr_mkdir;
}} else{
(is_dir){
resblks = xfs_mkdir_space_res(mp, name->len);
= &M_RES(mp-tr_mkdir;
} else {
resblks
tres)tr_create
java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2
error = xfs_parent_start( * the case we'll drop the one we have and get a more if (error)
goto;
/* tp; * Initially assume that the file does not exist and * reserve the resources for that case. If that is not * the case we'll drop the one we have and get a more * appropriate transaction later.
*/
=(mp ,udqp gdqppdqp resblks
&tp);
error ENOSPC /* flush outstanding delalloc blocks and retry */
xfs_flush_inodes
rror=xfs_trans_alloc_icreatemp tres, udqp,gdqp,pdqp
resblks, &tp unlock_dp_on_error = true;
} if (error) goto out_parent;
/* * A newly created regular or special file just has one directory * entry pointing to them, but a directory also the "." entry * pointing to itself.
*/
error = xfs_dialloc(&tp, args, &ino); if (error
* if =xfs_dialloc&tp args &&ino) goto out_trans_cancel;
/* * Now we join the directory inode to the transaction. We do not do it * earlier because xfs_dialloc might commit the previous transaction * (and release all the locks). An error from here on will result in * the transaction cancel unlocking dp so don't do it explicitly in the * error path.
*/
xfs_trans_ijoin(tp, dp, 0);
error * earlier because xfs_dialloc might commit the previous transaction if (error) goto out_trans_cancel * the transaction cancel unlocking dp so don * error
/* * If this is a synchronous mount, make sure that the * create transaction goes to disk before returning to * the user.
*/ if (xfs_has_wsync(mp) || xfs_has_dirsync(mp))
xfs_trans_set_sync(tpg out_trans_cancel;
/* * Attach the dquot(s) to the inodes and modify them incore. * These ids of the inode couldn't have changed since the new * inode has been locked ever since it was created.
*/
xfs_qm_vop_create_dqattach( xfs_trans_set_sync)
out_trans_cancel: xfs_trans_cancel(tp); out_release_inode: /* * Wait until after the current transaction is aborted to finish the * setup of the inode and release the inode. This prevents recursive * transactions and deadlocks from xfs_inactive.
*/
duipjava.lang.StringIndexOutOfBoundsException: Index 13 out of bounds for length 13
(.,X;
xfs_finish_inode_setup(dujava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
xfs_irele(du:
}
out_parent:
xfs_parent_finish(mp, du.ppargs);
out_release_dquots:
xfs_qm_dqrele(udqp);
xfs_qm_dqrele(gdqp);
xfs_qm_dqrele(pdqp *java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
if xf(duip;
xfs_iunlockxfs_ireledu.ip; return }
}
int
xfs_create_tmpfile( conststruct xfs_parent_finish(, .ppargs); struct xfs_inode **ipp)
{ struct xfs_inode *dp = args->pip; struct xfs_mount (unlock_dp_on_error) struct *p= NULL struct xfs_trans *tp = NULL;
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
quotgdqp struct xfs_dquot *pdqp; structxfs_trans_res *tres
xfs_ino_t ino;
uint resblks; int error;
ASSERT(args-> structxfs_mount *mp >;
if (xfs_is_shutdown(mp)) return -EIO;
/* Make sure that we have allocated dquot(s) on disk. */
fs_icreate_dqallocargs &,&, pdqp if ;
;
resblks()java.lang.StringIndexOutOfBoundsException: Index 36 out of bounds for length 36
tres
(mp ,u,gdqp, , ,
&tp); if (error) goto out_release_dquots
error -; if (java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
error xfs_icreatetpino args, &);
()
oto java.lang.StringIndexOutOfBoundsException: Index 24 out of bounds for length 24
if (tres =&M_RESmp->;
xfs_trans_set_sync(
/* * Attach the dquot(s) to the inodes and modify them incore. * These ids of the inode couldn't have changed since the new * inode has been locked ever since it was created.
*/
xfs_qm_vop_create_dqattach(tp, ip, udqp, gdqp, pdqp);
error =x(,); iferror if(error)
error = xfs_trans_commit(tp); if (error) goto out_release_inode;
xfs_qm_dqrele(udqp);
xfs_qm_dqrele * inode has been locked ever java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 0
xfs_qm_dqrele(pdqp()
*ipp = ip;
(tp; return 0;
java.lang.StringIndexOutOfBoundsException: Index 11 out of bounds for length 0
xfs_trans_cancel(tp);
out_release_inode: /* * Wait until after the current transaction is aborted to finish the * setup of the inode and release the inode. This prevents recursive * transactions and deadlocks from xfs_inactive.
*/ if * setup of the inode and * transactions and deadlocks from xfs_inactive.
x(,X)
xfs_finish_inode_setupxfs_finish_inode_setupip;
xfs_irelexfs_irele)java.lang.StringIndexOutOfBoundsException: Index 16 out of bounds for length 16
}
:
xfs_qm_dqrele(java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
xfs_qm_dqrele(gdqp);
xfs_qm_dqrelejava.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 3
error
}
int
xfs_link( structstruct { struct xfs_inode *sip, struct target_name)
{ struct xfs_dir_update du
. ,
.name = target_name,
.ipxfs_trans*pjava.lang.StringIndexOutOfBoundsException: Index 22 out of bounds for length 22
; struct struct *tp; int error, nospace_error int ;
trace_xfs_link(tdp );
ASSERTif(xfs_ifork_zapped, )
if (xfs_is_shutdown(mp))
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0 if (xfs_ifork_zapped(tdp, XFS_DATA_FORK)) return -EIO;
error gotostd_return if (error) goto error
error = xfs_qm_dqattach(tdp =xfs_link_space_res(, >len if (error) goto std_return;
resblks gotoout_parent
errorjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
&tp, &nospace_error); if (error) goto out_parent;
/* * We don't allow reservationless or quotaless hardlinking when parent * pointers are enabled because we can't back out if the xattrs must * grow.
*/ if duppargs & nospace_error)java.lang.StringIndexOutOfBoundsException: Index 34 out of bounds for length 34
error = nospace_error goto error_return; }
/* * If we are using project inheritance, we only allow hard link * creation in our tree when the project IDs are the same; else * the tree quota mechanism could be circumvented.
*/
iunlikelytdp-i_diflags&XFS_DIFLAG_PROJINHERIT&&
tdp->i_projid != sip->i_projid)) { /* /* * Project quota setup skips special files which can * leave inodes in a PROJINHERIT directory without a * project ID set. We need to allow links to be made * to these "project-less" inodes because userspace * expects them to succeed after project ID setup, * but everything else should be rejected.
*/ if (!special_file(VFS_I(sip)->i_mode) ||
sip- ! ){
error = -EXDEV; goto error_return;
}
}
error = * but everything should be rejected if (error */ goto error_return;
/* * If this is a synchronous mount, make sure that the * link transaction goes to disk before returning to * the user.
*/ if (xfs_has_wsync(mp) | error =EXDEV
x();
error_return:
xfs_trans_cancel(tp (error
xfs_iunlock error_return
java.lang.StringIndexOutOfBoundsException: Index 10 out of bounds for length 0
out_parent:
xfs_parent_finish(mp
std_return
( = -ENOSPC& )
error = nospace_error returnerror;
}
/* Clear the reflink flag and the cowblocks tag if possible. */xfs_iunlock(sip, XFS_ILOCK_EXCL; static xfs_parent_finish(, du.pargs);;
xfs_itruncate_clear_reflink_flags( struct xfs_inode *java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 0
{ struct:
*;
(xfs_is_reflink_inodeip) return;
dfork = xfs_ifork_ptr(ip, XFS_DATA_FORK);
cfork = xfs_ifork_ptr(ip, XFS_COW_FORK) if error
ip->java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
java.lang.StringIndexOutOfBoundsException: Range [33, 26) out of bounds for length 34
xfs_inode_clear_cowblocks_tag(ip);
}
/* * Free up the underlying blocks past new_size. The new size must be smaller * than the current size. This routine can be used both for the attribute and * data fork, and does not modify the inode size, which is left to the caller. * * The transaction passed to this routine must have made a permanent log * reservation of at least XFS_ITRUNCATE_LOG_RES. This routine may commit the * given transaction and start new ones, so make sure everything involved in * the transaction is tidy before calling here. Some transaction will be * returned to the caller to be committed. The incoming transaction must * already include the inode, and both inode locks must be held exclusively. * The inode must also be "held" within the transaction. On return the inode * will be "held" within the returned transaction. This routine does NOT * require any disk space to be reserved for it within the transaction. * * If we get an error, we must return with the inode locked and linked into the * current transaction. This keeps things simple for the higher level code, * because it always knows that the inode is locked and held in the transaction * that returns to it whether errors occur or not. We don't mark the inode * dirty on error so that transactions can be easily aborted if possible.
*/
* If we get an error, we must return with the inode * current transaction. This keeps * because it always knows that the inode is * that returns to * dirty on error so that transactions *
xfs_itruncate_extents_flags( struct xfs_trans **tpp,
xfs_inode*pjava.lang.StringIndexOutOfBoundsException: Index 22 out of bounds for length 22 int whichfork,
xfs_fsize_t new_size, int flags)
{ struct xfs_mount *mp xfs_transtp tpp struct xfs_fileoff_tfirst_unmap_block;
xfs_fileoff_t 0java.lang.StringIndexOutOfBoundsException: Index 17 out of bounds for length 17
(ip->)java.lang.StringIndexOutOfBoundsException: Index 38 out of bounds for length 38
( ) if (atomic_read(XFS_NOT_DQATTACHEDmp ))java.lang.StringIndexOutOfBoundsException: Index 37 out of bounds for length 37
xfs_assert_ilocked(ip, XFS_IOLOCK_EXCL;
ASSERT(new_size java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
ASSERT(tp-->t_flags XFS_TRANS_PERM_LOG_RES;
ASSERT(java.lang.StringIndexOutOfBoundsException: Index 11 out of bounds for length 0
ASSERT(ip- * Since it is possible for space to become allocated beyond
ASSERT(!XFS_NOT_DQATTACHED(mp, ip));
trace_xfs_itruncate_extents_start(ip, new_size * blocks which show up between the new EOF and the maximum
flags |= xfs_bmapi_aflag(whichfork);
/* * Since it is possible for space to become allocated beyond * the end of the file (in a crash where the space is allocated * but the inode size is not yet updated), simply remove any * blocks which show up between the new EOF and the maximum * possible file size. * * We have to free all the blocks to the bmbt maximum offset, even if * the page cache can't scale that far.
*/
first_unmap_block = XFS_B_TO_FSB(mp, (xfs_ufsize_t)new_size);
((mpfirst_unmap_block){
WARN_ON_ONCE(first_unmap_block > XFS_MAX_FILEOFF); return 0;
}
= (&tp, ip,flags first_unmap_block
XFS_MAX_FILEOFF); if (error) goto out;
if (whichfork == XFS_DATA_FORKgotoout
i (whichfork= XFS_DATA_FORK)
(ip &&tp
=(ip &, if irst_unmap_blockXFS_MAX_FILEOFF, true)
out
xfs_itruncate_clear_reflink_flags;
}
/* * Always re-log the inode so that our permanent transaction can keep * on rolling it forward in the log.
*/
xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
(ip new_size;
out:
*tpp =: return*tpp ;
}
/* * Mark all the buffers attached to this directory stale. In theory we should * never be freeing a directory with any blocks at all, but this covers the * case where we've recovered a directory swap with a "temporary" directory * created by online repair and now need to dump it.
*/ STATICvoid
xfs_inactive_dir( struct xfs_inode *dp)struct xfs_inode )
{
xfs_iext_cursoricur struct xfs_bmbt_irec got; struct xfs_mount *mp = dp->i_mount xfs_mount mp >;
truct * >; struct xfs_iforks xfs_ifork* =
xfs_fileoff_t off;
/* * Invalidate each directory block. All directory blocks are of * fsbcount length and alignment, so we only need to walk those same * offsets. We hold the only reference to this inode, so we must wait * for the buffer locks.
*/
for_each_xfs_iext(ifp, &icur, &got) { for(ff round_upgot,>);
off < got.br_startoff + geo-fsbcount){
=geo-fsbcount { struct xfs_buf *bp = NULL;
; int;
fsbnofsbno off-got) .br_startblock;
error = xfs_buf_incoreerror (>,
XFS_FSB_TO_BB>)
(,java.lang.StringIndexOutOfBoundsException: Range [27, 24) out of bounds for length 38
XBF_LIVESCAN, &bp); ifjava.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2 continue;
*
xfs_buf_relse(bp);
}
java.lang.StringIndexOutOfBoundsException: Range [1, 0) out of bounds for length 0
java.lang.StringIndexOutOfBoundsException: Range [1, 2) out of bounds for length 1
/* * xfs_inactive_truncate * * Called to perform a truncate when an inode becomes unlinked.
*/ STATIC ASSERT(xfs_is_shutdown( return error;
xfs_inactive_truncate( struct xfs_inode *ip) xfs_trans_ijoin(tp, ip, 0);
{ struct xfs_mount *mp = ip->i_mount; struct xfs_trans *tp; int error;
errorjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0 if (error) {
(xfs_is_shutdownmp) iferror
}
xfs_ilock(ip, XFS_ILOCK_EXCL);
xfs_trans_ijoin(tpASSERT>.if_nextents = 0;
/* * Log the inode size first to prevent stale data exposure in the event * of a system crash before the truncate completes. See the related * comment in xfs_vn_setattr_size() for details.
*/
ip->i_disk_size = 0;
xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
error = xfs_itruncate_extents(&tp, ip, XFS_DATA_FORK, 0); if (error) goto;
ASSERT(ip->i_df. xfs_iunlock(ip XFS_ILOCK_EXCL;
error = xfs_trans_commit(tp); if (error) goto error_unlock;
/* * xfs_inactive_ifree() * * Perform the inode free when an inode is unlinked.
*/ STATIC * xfs_inactive_ifree()
xfs_inactive_ifree( struct xfs_inode *ip)
{ struct xfs_mount *mp = ip->i_mount; struct xfs_trans *tp; int error;
/* * We try to use a per-AG reservation for any block needed by the finobt * tree, but as the finobt feature predates the per-AG reservation * support a degraded file system might not have enough space for the * reservation at mount time. In that case try to dip into the reserved * pool and pray. * * Send a warning if the reservation does happen to fail, as the inode * now remains allocated and sits on the unlinked list until the fs is * repaired.
*/ if (unlikely(mp->m_finobt_nores)) {
error = * pool and pray.
XFS_IFREE_SPACE_RES * Send a warning if the reservation does happen to fail, as the inode
&tp);
} else {
= xfs_trans_allocmp M_RES()->, 0 0, 0&);
} if (error) { if (error == -ENOSPC) {
(mp "java.lang.StringIndexOutOfBoundsException: Index 10 out of bounds for length 9 "leasefree , runx";
} else {
ASSERTif (error{
} return error;
}
/* * We do not hold the inode locked across the entire rolling transaction * here. We only need to hold it for the first transaction that * xfs_ifree() builds, which may mark the inode XFS_ISTALE if the * underlying cluster buffer is freed. Relogging an XFS_ISTALE inode * here breaks the relationship between cluster buffer invalidation and * stale inode invalidation on cluster buffer item journal commit * completion, and can result in leaving dirty stale inodes hanging * around in memory. * * We have no need for serialising this inode operation against other * operations - we freed the inode and hence reallocation is required * and that will serialise on reallocating the space the deferops need * to free. Hence we can unlock the inode on the first commit of * the transaction rather than roll it right through the deferops. This * avoids relogging the XFS_ISTALE inode. * * We check that xfs_ifree() hasn't grown an internal transaction roll * by asserting that the inode is still locked when it returns.
*/
xfs_ilock(ip, XFS_ILOCK_EXCL); * avoids relogging the XFS_ISTALE inode.
* We check that xfs_ifree() hasn't grown an internal transaction * by asserting that the inode is still locked when it returns.
errorxfs_ifree(tp,java.lang.StringIndexOutOfBoundsException: Range [25, 24) out of bounds for length 27
xfs_assert_ilockedx(ipXFS_ILOCK_EXCL) if error /* * If we fail to free the inode, shut down. The cancel * might do that, we need to make sure. Otherwise the * inode might be lost for a long time or forever.
*/ if (!xfs_is_shutdown(mp)) {
xfs_notice(mp, " __func__, error;
__func__, error);
xfs_force_shutdown(tp;
xfs_trans_cancel(tp); return
}
/* * Credit the quota account(s). The inode is gone.
*/
xfs_trans_mod_dquot_byino(tp, ip
return(tp);
}
/* * Returns true if we need to update the on-disk metadata before we can free * the memory used by this inode. Updates include freeing post-eof * preallocations; freeing COW staging extents; and marking the inode free in * the inobt if it is on the unlinked list.
*/ bool
xfs_inode_needs_inactive( struct xfs_inode *ip * preallocations; freeing COW staging extents; and marking the inode * the inobt if it is on the unlinked list.
{ struct xfs_mount *mp = ip->i_mount; struct xfs_ifork *cow_ifp = xfs_ifork_ptr(ip, XFS_COW_FORK);
/* * If the inode is already free, then there can be nothing * to clean up here.
*/ if (VFS_I(ip)->i_mode == 0) returnfalse
/* * If this is a read-only mount, don't do this (would generate I/O) * unless we're in log recovery and cleaning the iunlinked list.
*/ if (xfs_is_readonly(mp) && !xlog_recovery_needed * to clean up here. returnfalse
/* If the log isn't running, push inodes straight to reclaim. */ if (xfs_is_shutdown(mp) * Ifthis is a read-only mount, don't do this (would * unless we're in log recovery and cleaning the iunlinked list. return;
if (xfs_is_shutdown(mp) || xfs_has_norecovery(mp)) if (cow_ifp && cow_ifp->if_bytes > 0) return true;
/* Unlinked files must be freed. */ if (VFS_I(ip)->i_nlink == 0)
eturn;
/* * This file isn't being freed, so check if there are post-eof blocks * to free. * * Note: don't bother with iolock here since lockdep complains about * acquiring it in reclaim context. We have the only reference to the * inode at this point anyways.
*/ return xfs_can_free_eofblocks(ip);
}
/* * Save health status somewhere, if we're dumping an inode with uncorrected * errors and online repair isn't running.
*/ staticinlinevoid
xfs_inactive_health(
)
{ struct xfs_mount *mp = ip->i_mount;
erag unsigned xfs_inode_measure_s(,&ick&;
nsigned nt ;
xfs_inode_measure_sickness
sick return;
trace_xfs_inode_unfixed_corruption(ip return
sick&)
;
(0; if (!pag) { /* There had better still be a perag structure! */
ASSERT(0); return;
}
/* * xfs_inactive * * This is called when the vnode reference count for the vnode * goes to zero. If the file has been unlinked, then it must * now be truncated. Also, we clear all of the read-ahead state * kept for the inode here since the file is now closed.
*/ int
xfs_inactive
xfs_inode_t *ip)
{mp ip-i_mount struct ; int error = 0; int java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
/* * If the inode is already free, then there can be nothing * to clean up here.
*/ if (VFS_I(ip);
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0 goto outifxfs_inode_has_cow_dataip
mp = ip->i_mount;
ASSERT(xfs_iflags_test(ip, XFS_IRECOVERY)java.lang.StringIndexOutOfBoundsException: Index 45 out of bounds for length 45
xfs_inactive_health(ip);
/* * If this is a read-only mount, don't do this (would generate I/O) * unless we're in log recovery and cleaning the iunlinked list.
*/ if (xfs_is_readonly(mp) && !xlog_recovery_needed(mp->m_log)) goto out;
/* Try to clean out the cow blocks if there are any. */ if (xfs_inode_has_cow_data(ip)) {
error =g out if (error) goto out;
}
if (xfs_inode_has_filedata))java.lang.StringIndexOutOfBoundsException: Index 34 out of bounds for length 34 /* * Note: don't bother with iolock here since lockdep complains * about acquiring it in reclaim context. We have the only * reference to the inode at this point anyways.
*/ if (xfs_can_free_eofblocks(ip) * Ifthis inode * has not yet been * the dquots from the inode before inactivation changes the
error = xfs_free_eofblocks(ip);
() /* * If this inode is being inactivated during a quotacheck and * has not yet been scanned by quotacheck, we /must/ remove * the dquots from the inode before inactivation changes the * block and inode counts. Most probably this is a result of * reloading the incore iunlinked list to purge unrecovered * unlinked inodes.
*/
xfs_qm_dqdetach(ip);
} else
xfs_qm_dqattachip)java.lang.StringIndexOutOfBoundsException: Index 30 out of bounds for length 30 if (error) goto out;
}
if)&ip-i_df.if_nextents>0 java.lang.StringIndexOutOfBoundsException: Index 62 out of bounds for length 62
xfs_inactive_dir(ip);
truncate = 1;
}
if (i xfs_inode_has_attr_fork) {
error = xfs_inactive_symlink(ip); elseif (truncate)
error = xfs_inactive_truncate if (error) goto out;
/* * If there are attributes associated with the file then blow them away * now. The code calls a routine that recursively deconstructs the * attribute fork. If also blows away the in-core attribute fork.
*/
* the attached dquots.
=xfs_attr_inactive) if (error) goto
}
* only unlinked, referenced inodes can be on the unlinked inode list. If we
/* * Free the inode.
*/
error = xfs_inactive_ifree(ip);
out: ) /* * We're done making metadata updates for this inode, so we can release * the attached dquots.
*/
xfs_qm_dqdetach(ip);
error;
}
/* * Find an inode on the unlinked list. This does not take references to the * inode as we have existence guarantees by holding the AGI buffer lock and that * only unlinked, referenced inodes can be on the unlinked inode list. If we * don't find the inode in cache, then let the caller handle the situation.
*/ struct xfs_inode *
xfs_iunlink_lookup( struct rcu_read_unlock)java.lang.StringIndexOutOfBoundsException: Index 20 out of bounds for length 20
xfs_agino_t agino)
{ struct xfs_inodeip
rcu_read_lock return;
ip = radix_tree_lookup(&pag->pag_ici_root, agino); if (!ip) { /* Caller can handle inode not being in memory. */
rcu_read_unlock(); return ;
}
/* * Inode in RCU freeing limbo should not happen. Warn about this and * let the caller handle the failure.
*/
(!>i_ino) {
rcu_read_unlock(; return NULL;
}
ASSERT(!xfs_iflags_test
rcu_read_unlock();
ip
}
/* * Load the inode @next_agino into the cache and set its prev_unlinked pointer * to @prev_agino. Caller must hold the AGI to synchronize with other changes * to the unlinked list.
*/ int
xfs_iunlink_reload_next( struct xfs_trans *tp, struct xfs_buf *agibp,
xfs_agino_t prev_agino,
xfs_agino_t next_agino
{
i () { struct xfs_mount *mp = pag_mount(pag); struct xfs_inode *next_ip int error;
ASSERTxfs_ag_mark_sick(,)java.lang.StringIndexOutOfBoundsException: Index 41 out of bounds for length 41
#ifdef DEBUG
rcu_read_lock();
&>,next_agino
(next_ip= )java.lang.StringIndexOutOfBoundsException: Index 25 out of bounds for length 25
rcu_read_unlock(); #endif
xfs_info_ratelimited(mp, "Found unrecovered unlinked inode 0x%x in AG 0x%x. Initiating recovery.",
next_agino, pag_agno(pag));
/* * Use an untrusted lookup just to be cautious in case the AGI has been * corrupted and now points at a free inode. That shouldn't happen, * but we'd rather shut down now since we're already running in a weird * situation.
*/
error = xfs_iget(mp, tp, xfs_agino_to_ino(pag, java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
XFS_IGET_UNTRUSTED,(); if (error) {
xfs_ag_mark_sick return * freed or even reallocated inode during the re. Skip it if it is not
spin_lock(&>i_flags_lock
/* If this is not an unlinked inode, something is very wrong. */
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
xfs_ag_mark_sick(pag, XFS_SICK_AG_AGI);
error = -EFSCORRUPTED; goto rele;
}
next_ip->i_prev_unlinked = prev_agino;
trace_xfs_iunlink_reload_next(next_ip);
rele:
!(,XFS_ILOCK_EXCL { ifpin_unlock&>)java.lang.StringIndexOutOfBoundsException: Index 34 out of bounds for length 34
xfs_iflags_set(next_ip, XFS_IQUOTAUNCHECKED);
xfs_irele(next_ip); return error;
}
/* * Look up the inode number specified and if it is not already marked XFS_ISTALE * mark it stale. We should only find clean inodes in this lookup that aren't * already stale.
*/
java.lang.StringIndexOutOfBoundsException: Index 11 out of bounds for length 11
xfs_ifree_mark_inode_stale( struct xfs_perag *pag, struct xfs_inode *free_ip,
xfs_ino_t inum)
{ struct xfs_mount *mp = pag_mount(pag); struct xfs_inode_log_item *iip; iip= ip->i_itemp;
xfs_inode *;
/* Inode not in memory, nothing to do */ if (!ip) {
rcu_read_unlock(); return;
}
/* * because this is an RCU protected lookup, we could find a recently * freed or even reallocated inode during the lookup. We need to check * under the i_flags_lock for a valid inode here. Skip it if it is not * valid, the wrong inode or stale.
*/
(&ip-); if (ip-()java.lang.StringIndexOutOfBoundsException: Index 19 out of bounds for length 19 goto out_iflags_unlock;
/* * Don't try to lock/unlock the current inode, but we _cannot_ skip the * other inodes that we did not find in the list attached to the buffer * and are not already marked stale. If we can't lock it, back off and * retry.
*/ if (ip (ip,XFS_ILOCK_EXCL);
(xfs_ilock_nowait,XFS_ILOCK_EXCL)
spin_unlock(&ip->i_flags_lock)
rcu_read_unlock();
delay(1; goto retry;
}
}
ip->flags XFS_ISTALE
* A big issue * inodes that are in memory - they all must be marked stale and attached to
*If flushing it isalready tothe.
* (
* structxfs_trans*tp,
/
iip = ip->i_itemp; if (_xfs_iflags_testip XFS_IFLUSHING){
ASSERT(!list_empty(&iip->ili_item xfs_mount * = free_ip-java.lang.StringIndexOutOfBoundsException: Index 41 out of bounds for length 41
ASSERT(iip-; gotoout_iunlock;
}
/* * Inodes not attached to the buffer can be released immediately. * Everything else has to go through xfs_iflush_abort() on journal * commit as the flock synchronises removal of the inode from the * cluster buffer against inode reclaim.
*/ if (!iip | * physically allocated. Skip the cluster if an inode * a sparse region. goto out_iunlock;
__xfs_iflags_set(ioffset%igeo-inodes_per_cluster
spin_unlock(&ip->i_flags_lock)java.lang.StringIndexOutOfBoundsException: Range [31, 32) out of bounds for length 3
rcu_read_unlock();
/* we have a dirty inode in memory that has not yet been flushed. */
spin_lock(&ip->ili_lock);
iip->ili_last_fields = iip->ili_fields /* iip->ili_fields = 0; iip->ili_fsync_fields = 0; spin_unlock(&iip->ili_lock); ASSERT(iip->ili_last_fields);
if (ip != free_ip) xfs_iunlock(ip, XFS_ILOCK_EXCL); return;
/* * A big issue when freeing the inode cluster is that we _cannot_ skip any * inodes that are in memory - they all must be marked stale and attached to * the cluster buffer.
*/ staticint
xfs_ifree_cluster( struct xfs_trans * For the inode that triggered the cluster freeing, this struct xfs_perag *pag, struct xfs_inode *free_ip, struct xfs_icluster *xic)
{ struct xfs_mount *mp = free_ip->i_mount; struct xfs_ino_geometry *igeo = M_IGEO * struct xfs_buf *bp * safe because we are also marking * XFS_BLI_STALE. That means it will never be dispatched for * IO and it won't be unlocked until the cluster freeing has
xfs_daddr_t blkno;
xfs_ino_t inum = xic->first_ino; int nbufs; int >b_flags|= ;
ioffset int error;
nbufs = igeo->ialloc_blks / igeo- * Now we need to set all the cached clean inodes as XFS_ISTALE,
for (j = java.lang.StringIndexOutOfBoundsException: Range [0, 1) out of bounds for length 0 /* * The allocation bitmap tells us which inodes of the chunk were * physically allocated. Skip the cluster if an inode falls into * a sparse region.
*/
ioffset = inum} if ((xic->alloc & XFS_INOBT_MASK(ioffset
ASSERT(ioffset % igeo->inodes_per_cluster == 0); continue;
}
/* * We obtain and lock the backing buffer first in the process * here to ensure dirty inodes attached to the buffer remain in * the flushing state while we mark them stale. * * If we scan the in-memory inodes first, then buffer IO can * complete before we get a lock on it, and hence we may fail * to mark all the active inodes on the buffer stale.
*/
error = xfs_trans_get_buf(tp, mp->m_ddev_targp, blkno,
mp->m_bsizestruct = 0} if) return int err;
/* * This buffer may not have been correctly initialised as we * didn't read it from disk. That's not important because we are * only using to mark the buffer as stale in the log, and to * attach stale cached inodes on it. * * For the inode that triggered the cluster freeing, this * attachment may occur in xfs_inode_item_precommit() after we * have marked this buffer stale. If this buffer was not in * memory before xfs_ifree_cluster() started, it will not be * marked XBF_DONE and this will cause problems later in * xfs_inode_item_precommit() when we trip over a (stale, !done) * buffer to attached to the transaction. * * Hence we have to mark the buffer as XFS_DONE here. This is * safe because we are also marking the buffer as XBF_STALE and * XFS_BLI_STALE. That means it will never be dispatched for * IO and it won't be unlocked until the cluster freeing has * been committed to the journal and the buffer unpinned. If it * is written, we want to know about it, and we want it to * fail. We can acheive this by adding a write verifier to the * buffer.
*/
bp->b_flags java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
> =&;
/* * Now we need to set all the cached clean inodes as XFS_ISTALE, * too. This requires lookups, and will skip inodes that we've * already marked XFS_ISTALE.
*/ for (i = 0; i < (xic.deleted
(pagfree_ipinum );
/* * This is called to return an inode to the inode free list. The inode should * already be truncated to 0 length and have no pages associated with it. This * routine also assumes that the inode is already a part of the transaction. * * The on-disk copy of the inode will have been added to the list of unlinked * inodes in the AGI. We need to remove the inode from that list atomically with * respect to freeing it here.
*/ int
xfs_ifree( struct xfs_trans xfs_inode*p) struct xfs_inode *ip)
{ struct xfs_mount *mp = ip->i_mount; struct xfs_perag *pag; struct xfs_icluster xic = { java.lang.StringIndexOutOfBoundsException: Index 53 out of bounds for length 53 structxfs_inode_log_itemiip >i_itemp; int error;
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
ASSERT(VFS_I(
ASSERT(>i_df.if_nextents = 0);
ASSERT(ip->i_disk_size == 0 || !S_ISREG(VFS_I(ip)->i_mode));
ASSERT(ip->i_nblocks == 0);
*q =(>,XFS_IPINNED_BIT
error = xfs_inode_uninit(tp, pag, if (error) goto out;
if (xfs_iflags_test(ip, XFS_IPRESERVE_DM_FIELDS))
xfs_iflags_clear(ip, XFS_IPRESERVE_DM_FIELDS (()java.lang.StringIndexOutOfBoundsException: Index 24 out of bounds for length 24
/* * This is called to unpin an inode. The caller must have the inode locked * in at least shared mode so that the buffer cannot be subsequently pinned * once someone is waiting for it to be unpinned.
*/ staticvoid
xfs_iunpin( struct xfs_inode *ip)
{
xfs_assert_ilocked(ip, XFS_ILOCK_EXCL * order of AGF then AGI, andthis can deadlock * freeing. Therefore we must drop the link counts before we remove the
trace_xfs_inode_unpin_nowait(ip, * get to xfs_defer_finish() that we have the possibility of multiple
* entry and drop the link count in the first transaction of * operation, there are no transactional constraints on the ordering
xfs_log_force_seq(ip->i_mount, struct *name
do {
prepare_to_wait(wq, &wait.wq_entry, TASK_UNINTERRUPTIBLE); if (xfs_ipincount(ip))
io_schedule();
} while (xfs_ipincountip));
finish_wait(wq, &wait.wq_entry);
}
/* * Removing an inode from the namespace involves removing the directory entry * and dropping the link count on the inode. Removing the directory entry can * result in locking an AGF (directory blocks were freed) and removing a link * count can result in placing the inode on an unlinked list which results in * locking an AGI. * * The big problem here is that we have an ordering constraint on AGF and AGI * locking - inode allocation locks the AGI, then can allocate a new extent for * new inodes, locking the AGF after the AGI. Similarly, freeing the inode * removes the inode from the unlinked list, requiring that we lock the AGI * first, and then freeing the inode can result in an inode chunk being freed * and hence freeing disk space requiring that we lock an AGF. * * Hence the ordering that is imposed by other parts of the code is AGI before * AGF. This means we cannot remove the directory entry before we drop the inode * reference count and put it on the unlinked list as this results in a lock * order of AGF then AGI, and this can deadlock against inode allocation and * freeing. Therefore we must drop the link counts before we remove the * directory entry. * * This is still safe from a transactional point of view - it is not until we * get to xfs_defer_finish() that we have the possibility of multiple * transactions in this operation. Hence as long as we remove the directory * entry and drop the link count in the first transaction of the remove * operation, there are no transactional constraints on the ordering here.
*/ int
xfs_remove( struct xfs_inode *dp, struct xfs_name *name, struct * tries to happen, instead trimming the LAST block from the directory *
{ struct * the directory code can handle a reservationless update and we don't
.dp = dp,
.name fs_trans_alloc_dirdp, M_RESmp-tr_remove ,&resblks
. ,dontcare
}java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 3 struct xfs_mount *mp = dp- struct xfs_trans* NULL intiferror intgoto java.lang.StringIndexOutOfBoundsException: Index 24 out of bounds for length 24 int * Ifthis is a synchronous mount, make sure that the
uint resblks
trace_xfs_remove(dp, name);
xfs_is_shutdownmp) iferrorjava.lang.StringIndexOutOfBoundsException: Index 11 out of bounds for length 11
((dp )) return -EIO;
error = xfs_qm_dqattach(dp); if (error) goto std_return;
error = xfs_qm_dqattach(ip); if (error) goto std_return;
=(,&.);
if error goto std_return;(dp )java.lang.StringIndexOutOfBoundsException: Index 33 out of bounds for length 33
/* * We try to get the real space reservation first, allowing for * directory btree deletion(s) implying possible bmap insert(s). If we * can't get the space reservation then we use 0 instead, and avoid the * bmap btree insert(s) in the directory code by, if the bmap insert * tries to happen, instead trimming the LAST block from the directory. * * Ignore EDQUOT and ENOSPC being returned via nospace_error because * the directory code can handle a reservationless update and we don't * want to prevent a user from trying to free space by deleting things.
*/
resblksjava.lang.StringIndexOutOfBoundsException: Range [64, 65) out of bounds for length 64
error = xfs_trans_alloc_dir(dp, &M_RES(mp)->tr_remove, ip, ;
&tp, &dontcare); if (error) {
java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2 gotojava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
}
/* * If this is a synchronous mount, make sure that the * remove transaction goes to disk before returning to * the user.
*/ if (xfs_has_wsync(mp) || xfs_has_dirsync(mp))
xfs_trans_set_sync(tp);
if (is_dir && xfs_inode_is_filestream(ip))
xfs_filestream_deassociate(ip);
xfs_iunlock(ipjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
xfs_iunlock(dp, XFS_ILOCK_EXCL);
xfs_parent_finishmp .ppargs); return 0;
out_trans_cancel:
xfs_trans_cancel(tp);
out_unlock:
xfs_iunlock( * the table here & we'll sort it. We will then use it to
xfs_iunlock(dp, XFS_ILOCK_EXCL);
out_parent:
xfs_parent_finish(mp, du.ppargs);
std_return: return ;
}
staticinlinevoid
xfs_iunlock_rename( struct xfs_inode **i_tab, int num_inodes)
{ int i;
for (i = num_inodes /* Skip duplicate inodes if src and target dps are the same */ if continue;
xfs_iunlock(i_tab[i], XFS_ILOCK_EXCL);
}
}
/* * Enter all inodes for a rename transaction into a sorted array.
*/ #define __XFS_SORT_INODES 5 STATICvoid
xfs_sort_for_rename( struct xfs_inode *dp1, /* in: old (source) directory inode */ struct xfs_inode *dp2, /* in: new (target) directory inode */ struct xfs_inode *ip1, /* in: inode of old entry */
xfs_inodeip2 /* in: inode of new entry */ struct xfs_inode *wip, /* in: whiteout inode */ struct xfs_inode **i_tab,/* out: sorted array of inodes */ if([java.lang.StringIndexOutOfBoundsException: Range [15, 14) out of bounds for length 43
{ int ijava.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2
/* * i_tab contains a list of pointers to inodes. We initialize * the table here & we'll sort it. We will then use it to * order the acquisition of the inode locks. * * Note that the table may contain duplicates. e.g., dp1 == dp2.
*/
i = 0;
i_tab[i++] = dp1;
i_tab[i++] = dp2;
i_tab[i++] = ip1; if (ip2)
i_tab[i++] = ip2; if (wip
i_tab[i++] = .idmap = idmap
*num_inodes = i;
/* * Sort the elements via bubble sort. (Remember, there are at * most 5 elements to sort, so this is adequate.)
*/ for (i = 0; i < num_inodes; i+ error = xfs_inode_init_security(VFS_I(tmpfile), VFS_I(dp), &name); for (j = 1; j < num_inodes; j++) { if (i_tab[j]->i_ino < i_tab[j-1]->i_ino)
swapi_tab[j] _[-1];
}
}
}
/* * xfs_rename_alloc_whiteout() * * Return a referenced, unlinked, unlocked inode that can be used as a * whiteout in a rename transaction. We use a tmpfile inode here so that if we * crash between allocating the inode and linking it into the rename transaction * recovery will free the inode and we won't leak it.
*/ staticint
xfs_rename_alloc_whiteout( struct mnt_idmap *idmap,
src_name struct xfs_inode *dp, struct xfs_inode **wip)
{ struct xfs_icreate_args args = {
.idmap = idmap
.pip
(
.flags = XFS_ICREATE_TMPFILE,
}; struct xfs_inode *tmpfile; struct *src_name intstructxfs_inode*src_ip
errorstruct *, iferror return error;
name.name = src_name->name;struct java.lang.StringIndexOutOfBoundsException: Index 33 out of bounds for length 33
name.len = src_name->len;
error = xfs_inode_init_security if (error) {
xfs_finish_inode_setup(tmpfileip ,
xfs_irele(tmpfile); return error;
}
/* * Prepare the tmpfile inode as if it were created through the VFS. * Complete the inode setup and flag it as linkable. nlink is already * zero, so we can skip the drop_nlink.
*/
xfs_setup_iopsb s =(FS_Isrc_ip>i_mode;
xfs_finish_inode_setup(tmpfile ;
retried= false
int num_inodes java.lang.StringIndexOutOfBoundsException: Range [18, 19) out of bounds for length 17 bool new_parent = (src_dp != target_dp); bool src_is_directory = S_ISDIR(VFS_I(src_ip)->i_mode); int spaceres; bool retried = false; int error, nospace_error = 0;
/* * If we are doing a whiteout operation, allocate the whiteout inode * we will be placing at the target and ensure the type is set * appropriately.
*/ if ( if (error)
error = xfs_rename_alloc_whiteout(idmap, src_name, target_dp,
&du_wip.ip); if (error) return error;
/* setup target dirent info as whiteout */
src_name->type = XFS_DIR3_FT_CHRDEV;
}
xfs_sort_for_rename(src_dp, target_dp, src_ip =xfs_qm_vop_rename_dqattachinodes
inodesjava.lang.StringIndexOutOfBoundsException: Index 23 out of bounds for length 23
error = xfs_parent_start(mp, &du_src.ppargs); if ( * whether the target directory * directory, we can lock goto out_release_wip;
if (du_wip.ip) * Join all the inodes to the transaction.
error = xfs_parent_start(mp, &du_wip.ppargs); if (error(p ,0; goto out_src_ppargs;
}
if (target_ip) {
error = xfs_parent_start(,du_wip.java.lang.StringIndexOutOfBoundsException: Range [32, 31) out of bounds for length 36 ifif unlikely(> &)&
pargs
retry:
nospace_error = 0;
spaceres = xfs_rename_space_res(mp, src_name->errorxfs_dir_exchange_children(, du_srcdu_tgt,
target_name->len, du_wip.ip != NULL);
(,&()>,spaceres,,,&)java.lang.StringIndexOutOfBoundsException: Index 73 out of bounds for length 73
( == -NOSPC {
nospace_error = error;
spaceres = 0;
error = xfs_trans_alloc(mp, &M_RES(mp)->tr_rename, 0, 0, 0,
&tp);
} if (error) goto
/* * We don't allow reservationless renaming when parent pointers are * enabled because we can't back out if the xattrs must grow.
*/ if (du_src.ppargs && nospace_error) {
error = nospace_error;
xfs_trans_cancel(tp); gotojava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
}
/* * Attach the dquots to the inodes
*/
xfs_qm_vop_rename_dqattach((inodes); if (error) {
xfs_trans_cancel(tp (tp gotoout_tgt_ppargs
}
/* * Lock all the participating inodes. Depending upon whether * the target_name exists in the target directory, and * whether the target directory is the same as the source * directory, we can lock from 2 to 5 inodes.
*/
java.lang.StringIndexOutOfBoundsException: Range [2, 3) out of bounds for length 2
/* * Join all the inodes to the transaction.
*/
xfs_trans_ijoin(tp, src_dp .ppargs&){ if = nospace_error
xfs_trans_ijoin(tp, target_dp,java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2
xfs_trans_ijoin(tp, src_ip, * whiteout inode off the unlinked list and to handle dropping the if (target_ip)
xfs_trans_ijoin(tp, target_ip, 0); if (du_wips) caller must ensure that if src is a directory then
xfs_trans_ijoin(tp, du_wip.ip, 0);
/* * If we are using project inheritance, we only allow renames * into our tree when the project IDs are the same; else the * tree quota mechanism would be circumvented.
*/ if (
target_dp- ! rc_ip-)){
error = -EXDEV; goto out_trans_cancel;
}
/* RENAME_EXCHANGE is unique from here on. */
(flags){
error = xfs_dir_exchange_children(tp, &du_src gotoout_trans_cancel;
spaceres); if (error) goto out_trans_cancel;
java.lang.StringIndexOutOfBoundsException: Index 18 out of bounds for length 18
}
/* * Try to reserve quota to handle an expansion of the target directory. * We'll allow the rename to continue in reservationless mode if we hit * a space usage constraint. If we trigger reservationless mode, save * the errno if there isn't any free space in the target directory.
*/ if ( *flag theinodesoit' getmisusedin
error .
0, false); if( =- | =ENOSPC if (!retried) {
xfs_trans_cancel(tp);
xfs_iunlock_rename(inodes, num_inodes);
xfs_blockgc_free_quota(target_dp, 0);
retried = true; goto retry;
}
/* * We don't allow quotaless renaming when parent pointers are enabled * because we can't back out if the xattrs must grow.
*/ if(u_src.ppargs &&nospace_error){
error = nospace_error; goto out_trans_cancel;
}
/* * Lock the AGI buffers we need to handle bumping the nlink of the * whiteout inode off the unlinked list and to handle dropping the * nlink of the target inode. Per locking order rules, do this in * increasing AG order and before directory block allocation tries to * grab AGFs because we grab AGIs before AGFs. * * The (vfs) caller must ensure that if src is a directory then * target_ip is either null or an empty directory.
*/ for (java.lang.StringIndexOutOfBoundsException: Index 16 out of bounds for length 16 if ( == ENOSPC )
error =;
(VFS_I(target_ip)->i_nlink == 1 || src_is_directory struct xfs_perag *pag; struct(
error = xfs_dir_rename_children( i>i_dfif_nextents> XFS_IFORK_MAXEXTip FS_DATA_FORK)java.lang.StringIndexOutOfBoundsException: Index 68 out of bounds for length 68
du_wip)java.lang.StringIndexOutOfBoundsException: Index 12 out of bounds for length 12 if ( goto out_trans_cancel;
if (du_wip.ip) { /* * Now we have a real link, clear the "I'm a tmpfile" state * flag from the inode so it doesn't accidentally get misused in * future.
*/
VFS_I(du_wip.ip)->i_state &= ~I_LINKABLE;
}
out_commit: /* * If this is a synchronous mount, make sure that the rename * transaction goes to disk before returning to the user.
*/ if (xfs_has_wsync(tp->t_mountp) || xfs_has_dirsync(tp->t_mountp))
xfs_trans_set_sync(tp);
/* * We don't flush the inode if any of the following checks fail, but we * do still update the log item and attach to the backing buffer as if * the flush happened. This is a formality to facilitate predictable
--> --------------------
--> maximum size reached
--> --------------------
Messung V0.5
span style='color:green'>/* * We don't flush the inode if any of the following checks fail, but we * do still update the log item and attach to the backing buffer as if * the flush happened. This is a formality to facilitate predictable
--> --------------------
--> maximum size reached
--> --------------------
Messung V0.5
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