##java.lang.NullPointerException
ststaticstaticstruct ocfs2_super * Return * These control * and ocfs2_process_blocked_lock ocfs2_unblock_action {
UNBLOCK_STOP_POST 2,java.lang.StringIndexOutOfBoundsException: Index 51 out of bounds for length 51
*
* Copyright(C)2003 20 OracleAll reserved
*/
#include < )java.lang.StringIndexOutOfBoundsException: Index 24 out of bounds for length 24 # int)java.lang.StringIndexOutOfBoundsException: Index 20 out of bounds for length 20 # linux.h> #include <linux/mm.h>
java.lang.NullPointerException #include <linuxpagemap> #include <linux/debugfs.h> #include <linux/seq_file.h voidocfs2_dump_meta_lvb_infou64 level,
includelinux/ime #include <linux/delay.h> #include <linux int , # linux/.h>
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
#define MLOG_MASK_PREFIXjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0 # <clustermasklog>
staticstruct ocfs2_super *ocfs2_get_dentry_osb( unsignedlong)be64_to_cpulvb-) staticstruct be16_to_cpulvb-); staticstruct ocfs2_super *ocfs2_get_file_osb(struct(, u, atime_packed%llxctime_packedllx java.lang.StringIndexOutOfBoundsException: Index 67 out of bounds for length 67 staticstruct ocfs2_superlong)(>)
/*lvb_iattr * Return value from ->downconvert_worker functions. * * These control the precise actions of ocfs2_unblock_lock() * and ocfs2_process_blocked_lock() *
*/ enum ocfs2_unblock_action * struct ocfs2_super and allow * Right now, each * and * should be called when java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
*/
UNBLOCK_CONTINUE_POST = 1,
* ->post_unlock callback */
UNBLOCK_STOP_POST = 2, * after this callback is called, so it * * The exact * by ->downconvert_worker
}; * Allow a lock type * safe to downconvert * downconvert at * For most locks * incompatible holders are * Called with
struct * is called on * * Locks that * in the flags * int requeue enum * Called from * that a lock * any locks held * schedule (syncing out data * This should * values, depending
};
/* Lockdep class keys */ #ifdef java.lang.StringIndexOutOfBoundsException: Index 7 out of bounds for length 4 staticstruct * meaningful (PRMODE or * flag is set, * individual lockres l_flags * expected that * OCFS2_LOCK_NEEDS_REFRESHjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0 #endif
staticint ocfs2_check_refcount_downconvert(struct ocfs2_lock_res. =LOCK_TYPE_REQUIRES_REFRESH int new_level. , staticint ocfs2_refcount_convert_worker
#define mlog_meta_lvb. =,
/* This aids in debugging situations where a bad LVB might be involved. */ java.lang.StringIndexOutOfBoundsException: Index 61 out of bounds for length 61 static ocfs2_dump_meta_lvb_infou64, constchar *function, unsignedint line
. = ocfs2_dentry_convert_worker,
{
.flags =0java.lang.StringIndexOutOfBoundsException: Index 13 out of bounds for length 13
mlog(level, "LVB information for %s (called from %s:%u):\n",
lockres-, functionline;
mlog(level, "version: %u, clusters: %u, generation: 0x get_osb = ocfs2_get_inode_osb,
lvb-lvb_version,be32_to_cpu(>lvb_iclusters),
be32_to_cpu(lvb->lvb_igeneration));
mlog(level, "size: %llu, uid %u, gid %u, mode 0x%x\n", unsignedlonglongbe64_to_cpu(lvb-lvb_isize, conststructocfs2_lock_res_opsocfs2_flock_lopsjava.lang.StringIndexOutOfBoundsException: Range [57, 56) out of bounds for length 59
(lvb->lvb_imode);
mlog(level, "nlink %u, atime_packed 0x%llx, ctime_packed 0x%llx, "
mtime_packedxllx xxn,),
(longlong)be64_to_cpuget_osb= ocfs2_get_qinfo_osb,
(onglong)(lvb-lvb_ictime_packed,
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
be32_to_cpu(lvb->lvb_iattr));
}
/* * OCFS2 Lock Resource Operations * * These fine tune the behavior of the generic dlmglue locking infrastructure. * * The most basic of lock types can point ->l_priv to their respective * struct ocfs2_super and allow the default actions to manage things. * * Right now, each lock type also needs to implement an init function, * and trivial lock/unlock wrappers. ocfs2_simple_drop_lockres() * should be called when the lock is no longer needed (i.e., object * destruction time).
*/ struct ocfs2_lock_res_ops { /* * Translate an ocfs2_lock_res * into an ocfs2_super *. Define * this callback if ->l_priv is not an ocfs2_super pointer
*/ struct ocfs2_super * (*get_osb) >l_type== OCFS2_LOCK_TYPE_RW ||
/* * Optionally called in the downconvert thread after a * successful downconvert. The lockres will not be referenced * after this callback is called, so it is safe to free * memory, etc. * * The exact semantics of when this is called are controlled * by ->downconvert_worker()
*/ void (*post_unlock)(struct ocfs2_super *, struct ocfs2_lock_res
/* * Allow a lock type to add checks to determine whether it is * safe to downconvert a lock. Return 0 to re-queue the * downconvert at a later time, nonzero to continue. * * For most locks, the default checks that there are no * incompatible holders are sufficient. * * Called with the lockres spinlock held.
*/ int (*check_downconvert)(struct ocfs2_lock_res *, int);
/* * Allows a lock type to populate the lock value block. This * is called on downconvert, and when we drop a lock. * * Locks that want to use this should set LOCK_TYPE_USES_LVB * in the flags field. * * Called with the lockres spinlock held.
*/ void (*set_lvb
/* * Called from the downconvert thread when it is determined * that a lock will be downconverted. This is called without * any locks held so the function can do work that might * schedule (syncing out data, etc). * * This should return any one of the ocfs2_unblock_action * values, depending on what it wants the thread to do.
*/ int (*downconvert_worker)(struct ocfs2_lock_res *, int);
/* * LOCK_TYPE_* flags which describe the specific requirements * of a lock type. Descriptions of each individual flag follow.
*/ int
};
/* * Some locks want to "refresh" potentially stale data when a * meaningful (PRMODE or EXMODE) lock level is first obtained. If this * flag is set, the OCFS2_LOCK_NEEDS_REFRESH flag will be set on the * individual lockres l_flags member from the ast function. It is * expected that the locking wrapper will clear the * OCFS2_LOCK_NEEDS_REFRESH flag when done.
*/ #define LOCK_TYPE_REQUIRES_REFRESH 0x1
/* * Indicate that a lock type makes use of the lock value block. The * ->set_lvb lock type callback must be defined.
*/ #define LOCK_TYPE_USES_LVB 0x2
staticconststruct ocfs2_lock_res_opsstaticvoid_ocfs2_cluster_unlock(truct *,
. int , longcaller_ip;
}java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2
static ocfs2_lock_res_ops ocfs2_orphan_scan_lops{
.flags ocfs2_generic_handle_convert_actionstructocfs2_lock_resl)java.lang.StringIndexOutOfBoundsException: Index 87 out of bounds for length 87
};
staticinlineint ocfs2_is_inode_lock(struct ocfs2_lock_res *lockres)
{ return buffer_head*bh
lockres->l_type == inline int ocfs2_highest_compat_loc( )java.lang.StringIndexOutOfBoundsException: Index 61 out of bounds for length 61
lockres-l_type =OCFS2_LOCK_TYPE_OPEN;
}
static new_level
{ return unsignedint)java.lang.StringIndexOutOfBoundsException: Index 31 out of bounds for length 31
}
staticinlinestruct java.lang.StringIndexOutOfBoundsException: Index 26 out of bounds for length 0
ocfs2_lock_res_refcount_tree ocfs2_dlm_tracking_lock
{ staticvoid( res
}
static inline
{ if (lockres->l_ops->get_osb returnlockres-l_ops-get_osblockres
*)>l_privjava.lang.StringIndexOutOfBoundsException: Index 46 out of bounds for length 46
}
staticint ocfs2_lock_create(struct
, int level(res-)
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1 staticinlineint(struct lockres int wanted staticvoid_ocfs2_cluster_unlockstruct o,
ocfs2_lock_res*lockres int level, unsignedlong caller_ipmemset&res-, 0( ocfs2_lock_stats
tatic ( ocfs2_super *sb struct ocfs2_lock_res *lockres, intlevel
{
__ocfs2_cluster_unlock ;
}
staticinline void(struct lockres static stats= res-l_lock_prmode static s *,intlevel staticvoidstats res-; struct ocfs2_lock_res *return staticvoidocfs2_recover_from_dlm_error(struct ocfs2_lock_res *lockres, int convert; #define ocfs2_log_dlm_error(_func, _err, _lockres) do { \ if(lockres->type! OCFS2_LOCK_TYPE_DENTRY) \
mlog(ML_ERROR, "DLM error %d while calling %s on resource %s\n", \
_err, _func, _lockres->l_name); \
(, "
tats- =usec ifret
} 0) static > ktime_to_usktime_get_real); staticvoid ocfs2_downconvert_on_unlock(struct ocfs2_super *osb,
tructocfs2_lock_reslockres; staticint ocfs2_inode_lock_update(struct inode *inode, struct buffer_head>_lock_refresh staticvoidinlinestruct *lockres staticintocfs2_highest_compat_lock_levelint ); staticunsignedint ocfs2_prepare_downconvert int new_level; staticint ocfs2_downconvert_lock(struct ocfs2_super *osb lockres->_lock_wait ; struct ocfs2_lock_res *lockres, int , int lvb,
unsignedint ; staticint ocfs2_prepare_cancel_convert(struct ocfs2_super *osb, struct *) staticint ocfs2_cancel_convert(struct ocfs2_super * tructocfs2_mask_waitermw_item)java.lang.StringIndexOutOfBoundsException: Index 39 out of bounds for length 39 struct>mw_lock_start=(;
staticvoidelse
blkno
u32 generation,
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1 int;
BUG_ON(java.lang.StringIndexOutOfBoundsException: Index 9 out of bounds for length 1
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
ocfs2_lock_type_char(type), OCFS2_LOCK_ID_PAD,
( )blkno )java.lang.StringIndexOutOfBoundsException: Index 39 out of bounds for length 39
BUG_ON(len != java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
#ifdef CONFIG_OCFS2_FS_STATS staticvoid ocfs2_init_lock_stats(struct ocfs2_lock_res *res)
{
es- 0java.lang.StringIndexOutOfBoundsException: Index 25 out of bounds for length 25
l_lock_wait 0;
memsetres-l_lock_prmode 0,(structocfs2_lock_stats
memsetfoid (struct *)
}
staticvoid ocfs2_update_lock_stats(struct java.lang.StringIndexOutOfBoundsException: Index 56 out of bounds for length 47 struct *, intret
{
u32usec
ktime_t kt structocfs2_lock_stats;
java.lang.StringIndexOutOfBoundsException: Range [0, 3) out of bounds for length 0
stats int eneration elseif (level
stats = &res->l_lock_exmode; else return;
kt = ktime_sub(ktime_get()caseOCFS2_LOCK_TYPE_META
usec = java.lang.StringIndexOutOfBoundsException: Range [2, 1) out of bounds for length 28
stats->ls_gets+
mlog_bug_on_msg1 : %\n"type;
/ if (unlikelyjava.lang.StringIndexOutOfBoundsException: Index 13 out of bounds for length 9
>++
stats-generationres->l_name;
}
if (stats->ls_max < usec)(OCFS2_SBinode-) , , ops inode
> =usec
if (ret)
stats->ls_fail++;
stats->
}
staticinlinevoid
{
lockres->l_lock_refresh++;
}
staticinline ocfs2_mem_dqinfo =lockres->l_privjava.lang.StringIndexOutOfBoundsException: Index 49 out of bounds for length 49
{ struct ocfs2_superocfs2_get_file_osbstructocfs2_lock_res *)
if
ockres- java.lang.StringIndexOutOfBoundsException: Index 27 out of bounds for length 27
;
}
staticinlinejava.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
{
mw-mw_lock_startktime_get(;
} # * = &>; static
{
} static * Unfortunately, the standard lock naming scheme won't * here because we have two 16 byte * we'll stuff the inode number * want error prints to show something without garbling * display, so drop a null byte in there before the inode int * NOTE: We also drop the standard * name size stays the same though - the last * zeros due to the memset
{
} static ( long);
{
} staticinlinevoid ocfs2_track_lock_wait(struct ocfs2_lock_res *lockres)
{
} staticinlinevoid ocfs2_init_start_time(struct
{
} #endif
staticvoid java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
res enum ocfs2_lock_type type, java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
onststructocfs2_lock_res_opsops,
voidpriv
{
ocfs2_super_lops)
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
res->l_priv voidocfs2_rename_lock_res_initstruct *,
res->java.lang.StringIndexOutOfBoundsException: Index 10 out of bounds for length 1
res->l_requested = DLM_LOCK_IV;
ores;
res->l_action = OCFS2_AST_INVALID;
;
ocfs(,resOCFS2_LOCK_TYPE_RENAME
ocfs2_add_lockres_tracking(res, osb-java.lang.StringIndexOutOfBoundsException: Index 37 out of bounds for length 1
s2_init_lock_statsres; #ifdef CONFIG_DEBUG_LOCK_ALLOC if (type
(res-l_lockdep_map []java.lang.StringIndexOutOfBoundsException: Index 70 out of bounds for length 70
&type; else
res-> void(struct *sb #endif
}
void (>)
{ /* This also clears out the lock status block */ocfs2_trim_fs_lock_res_initstruct )
memsetres0,sizeofstruct)
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
init_waitqueue_head(java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
osblockresOCFS2_LOCK_TYPE_TRIM_FS
INIT_LIST_HEAD&>)java.lang.StringIndexOutOfBoundsException: Index 33 out of bounds for length 33
}
void ocfs2_inode_lock_res_init(struct ocfs2_lock_res *res,
enum , unsigned java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0 struct inode
{ conststruct ocfs2_lock_res_ops java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
(type { case OCFS2_LOCK_TYPE_RW:
ops = &ocfs2_inode_rw_lops;
; case OCFS2_LOCK_TYPE_META:
ops=&; break; case OCFS2_LOCK_TYPE_OPEN:
ops = &java.lang.StringIndexOutOfBoundsException: Index 21 out of bounds for length 1 break default:
mlog_bug_on_msg(1, " structocfs2_file_private *p
ops = NULLstructinode * =fp-fp_file->_mapping->;
;
}
/* * Unfortunately, the standard lock naming scheme won't work * here because we have two 16 byte values to use. Instead, * we'll stuff the inode number as a binary value. We still * want error prints to show something without garbling the * display, so drop a null byte in there before the inode * number. A future version of OCFS2 will likely use all * binary lock names. The stringified names have been a * tremendous aid in debugging, but now that the debugfs * interface exists, we can mangle things there if need be. * * NOTE: We also drop the standard "pad" value (the total lock * name size stays the same though - the last part is all * zeros due to the memset in ocfs2_lock_res_init_once()
*/
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
ocfs2_lock_type_char * Keep a list of processes who have interest in a lockres.
(longlong( ocfs2_lock_res *,
ocfs2_lock_res_init_common(oh-oh_list)java.lang.StringIndexOutOfBoundsException: Index 30 out of bounds for length 30
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
(&>oh_list &>)
}
staticvoid ocfs2_super_lock_res_init(struct ocfs2_lock_res *res, struct ocfs2_super
{ /* Superblock lockres doesn't come from a slab so we call init
* once on it manually. */
()
(,OCFS2_SUPER_BLOCK_BLKNO
l_name
ocfs2_lock_res_init_common(&>)java.lang.StringIndexOutOfBoundsException: Index 33 out of bounds for length 33
&ocfs2_super_lops(lockres-);
}
staticvoid ocfs2_rename_lock_res_init voido( ocfs2_lock_res*, structocfs2_super*)
{ /* Rename lockres doesn't come from a slab so we call init
* once on it manually. */
ocfs2_lock_res_init_once(res);
ocfs2_build_lock_name(OCFS2_LOCK_TYPE_RENAME, 0java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
ocfs2_lock_res_init_common(osb, res level
!)
}
staticl_ex_holders struct ocfs2_super
{ /* nfs_sync lockres doesn't come from a slab so we call init
* once on it manually. */
ocfs2_lock_res_init_once)java.lang.StringIndexOutOfBoundsException: Index 31 out of bounds for length 31
(){
ocfs2_lock_res_init_common(osb, res, OCFS2_LOCK_TYPE_NFS_SYNC,
&ocfs2_nfs_sync_lops, osb);
}
static BUG_ON!>l_ex_holders;
{
ocfs2_nfs_sync_lock_res_init(&osb-DLM_LOCK_PR:
init_rwsem(&osb->nfs_sync_rwlock) >java.lang.StringIndexOutOfBoundsException: Index 25 out of bounds for length 8
}
void ocfs2_qinfo_lock_res_init(struct ocfs2_lock_res *lockres, struct(!lockres-l_flags& OCFS2_LOCK_BUSY)java.lang.StringIndexOutOfBoundsException: Index 47 out of bounds for length 47
{
ocfs2_lock_res_init_once(lockres);
ocfs2_build_lock_name(OCFS2_LOCK_TYPE_QINFO, info->dqi_gi.dqi_type, * *anything* however should mark ourselves as java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
0, lockres-l_name;
ocfs2_lock_res_init_common(OCFS2_SB(info->dqi_gi.dqi_sb), lockres,
OCFS2_LOCK_TYPE_QINFO ocfs2_qinfo_lops
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
}
void ocfs2_refcount_lock_res_init(struct ocfs2_lock_res *lockres, struct ocfs2_super *osb, u64 ref_blkno, unsignedint generation)
{
ocfs2_lock_res_init_once(lockres);
ocfs2_build_lock_name(OCFS2_LOCK_TYPE_REFCOUNT, * Donot prevent the dc thread from downconverting if NONBLOCK lock
generation, lockres-l_name;
ocfs2_lock_res_init_common(osb, lockres, OCFS2_LOCK_TYPE_REFCOUNT,
ocfs2_refcount_block_lopsosb);
}
void ocfs2_lock_res_free(struct ocfs2_lock_res *res)
{ if (!(res->l_flags & OCFS2_LOCK_INITIALIZED)) return;
ocfs2_remove_lockres_tracking(res);
mlog_bug_on_msg(!list_empty(&res->l_blocked_list),
java.lang.StringIndexOutOfBoundsException: Index 53 out of bounds for length 41
res-
mlog_bug_on_msglist_empty(res-l_mask_waiters)
(>l_flags OCFS2_LOCK_LOCAL) &java.lang.StringIndexOutOfBoundsException: Index 46 out of bounds for length 46
res->l_name) lockres_or_flags(lockres, OCFS2_LOCK_NEEDS_REFRESH);
mlog_bug_on_msg(spin_is_locked(&res->l_locklockres-l_level =lockres-l_requested
ockres_or_flagslockres,OCFS2_LOCK_ATTACHED)
res-);
mlog_bug_on_msg(res->l_ro_holders, "Lockres %s has %u ro holders\n" static ocfs2_generic_handle_bast(structocfs2_lock_res *,
mlog_bug_on_msgres-l_ex_holders, "Lockres %s has %u ex holders\n",
res-l_nameres-l_ex_holders)java.lang.StringIndexOutOfBoundsException: Index 35 out of bounds for length 35
/* Need to clear out the lock status block for the dlm */ >l_blocking {
memset(&res->l_lksb, 0, sizeof(res->l_lksb));
res->l_flags * blocking. this also catches the case where we get
}
staticstruct __lockres_clear_pending() sees PENDING is unset and does
ocfs2_pid_holder(struct * But what if another path (eg downconvert thread) has just started * new locking action? The other path has re-set PENDING. Our * cannot clear PENDING, because that will re-open the original * window.
* ocfs2_cluster_lock()
{ struct ocfs2_lock_holder *oh;
spin_lock(&lockres->l_lock);
list_for_each_entry(oh, &lockres- * clear PENDING ocfs2_unblock_lock() if (oh- * ocfs2_prepare_downconvert()
* set * drop l_lock return * drop l_lock
*
}
spin_unlock(&lockres->l_lock * return NULL;* set by ocfs2_prepare_downconvert(). That wasn't nice.
}
* lockres_clear_pending() will only do so when it is passed a generation struct ocfs2_lock_holder *oh)
{
spin_lock(&lockres->l_lock);
list_del(&oh->oh_list);
spin_unlock(&lockres->l_lock
put_pid(oh->oh_owner_pid);
}
staticvoid( ocfs2_lock_res*,
nt level
{
BUG_ON
switch(level) { case DLM_LOCK_EX:
break; case DLM_LOCK_PR:
lockres->l_ro_holders++; break; default:
BUG();
}
}
static
)
{
BUG_ON!)java.lang.StringIndexOutOfBoundsException: Index 18 out of bounds for length 18
switch(level) { case DLM_LOCK_EX:
BUG_ON(! * were PENDING. Wake it up.
lockres- java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
break case DLM_LOCK_PR:
(!lockres-l_ro_holders)java.lang.StringIndexOutOfBoundsException: Index 33 out of bounds for length 33
lockres->l_ro_holders--; break; default:
BUG();
}
}
/* WARNING: This function lives in a world where the only three lock * levels are EX, PR, and NL. It *will* have to be adjusted when more
* lock types are added. */ unsignedint generation
{ int new_level = DLM_LOCK_EX;
list_del_init(&mw->mw_item);
mw-> = ;
complete(&mw->mw_complete);
ocfs2_track_lock_wait(lockres);
}
} staticvoid lockres_or_flags(struct ocfs2_lock_res *lockres, unsignedlongor)
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
lockres_set_flags,lockres-l_flags |or
} staticvoidlockres_clear_flagsstruct *ockres unsigned clear
{
lockres>l_flags ~)
}
staticinlinevoid ocfs2_generic_handle_downconvert_action(struct * We can skip the bast for locks which ssible time anyway.
{
((>&)java.lang.StringIndexOutOfBoundsException: Index 47 out of bounds for length 47
BUG_ONlockres-l_flags )
BUG_ON(!(lockres- ()
BUG_ONlockres-l_blocking =D);
lockres-l_level=java.lang.StringIndexOutOfBoundsException: Range [28, 21) out of bounds for length 41 if (lockres->l_level <=
ocfs2_highest_compat_lock_level(lockres->l_blocking)) {
lockres->l_blocking = DLM_LOCK_NL ocfs2_locking_aststruct *)
lockres_clear_flags ocfs2_lock_res *ockres ocfs2_lksb_to_lock_reslksb;
}
lockres_clear_flags(java.lang.StringIndexOutOfBoundsException: Index 26 out of bounds for length 21
}
/* Convert from RO to EX doesn't really need anything as our * information is already up to data. Convert from NL to * *anything* however should mark ourselves as needing an
* update */ if
lockres-ML_BASTS" for %s action%,unlock%
kresjava.lang.StringIndexOutOfBoundsException: Range [53, 52) out of bounds for length 54
:
/* * We set the OCFS2_LOCK_UPCONVERT_FINISHING flag before clearing * the OCFS2_LOCK_BUSY flag to prevent the dc thread from * downconverting the lock before the upconvert has fully completed. * Do not prevent the dc thread from downconverting if NONBLOCK lock * had already returned.
*/ if (!(lockres->l_flags &ocfs2_generic_handle_downconvert_action defaultjava.lang.StringIndexOutOfBoundsException: Index 9 out of bounds for length 9 else
(;
java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 3
* know that dlm_lock() has been called :-)
lockres->l_ops->flags & LOCK_TYPE_REQUIRES_REFRESH)
lockres_or_flags(java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
staticint ocfs2_generic_handle_bast(struct ocfs2_lock_res *lockres, int level)
{ int needs_downconvert * =(ksb;
assert_spin_locked(&lockres- ;
flevel >lockres-)java.lang.StringIndexOutOfBoundsException: Index 35 out of bounds for length 35 /* only schedule a downconvert if we haven't already scheduled * one that goes low enough to satisfy the level we're * blocking. this also catches the case where we get
* duplicate BASTs */ if ( switch>)java.lang.StringIndexOutOfBoundsException: Index 35 out of bounds for length 35
n =
lockres->l_blockingjava.lang.StringIndexOutOfBoundsException: Index 55 out of bounds for length 55
ocfs2_get_lockres_osblockres;
if (needs_downconvertjava.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2
lockres_or_flags((lockres-l_lock )
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1 return needs_downconvert;
}
/* * OCFS2_LOCK_PENDING and l_pending_gen. * * Why does OCFS2_LOCK_PENDING exist? To close a race between setting * OCFS2_LOCK_BUSY and calling ocfs2_dlm_lock(). See ocfs2_unblock_lock() * for more details on the race. * * OCFS2_LOCK_PENDING closes the race quite nicely. However, it introduces * a race on itself. In o2dlm, we can get the ast before ocfs2_dlm_lock() * returns. The ast clears OCFS2_LOCK_BUSY, and must therefore clear * OCFS2_LOCK_PENDING at the same time. When ocfs2_dlm_lock() returns, * the caller is going to try to clear PENDING again. If nothing else is * happening, __lockres_clear_pending() sees PENDING is unset and does * nothing. * * But what if another path (eg downconvert thread) has just started a * new locking action? The other path has re-set PENDING. Our path * cannot clear PENDING, because that will re-open the original race * window. * * [Example] * * ocfs2_meta_lock() * ocfs2_cluster_lock() * set BUSY * set PENDING * drop l_lock * ocfs2_dlm_lock() * ocfs2_locking_ast() ocfs2_downconvert_thread() * clear PENDING ocfs2_unblock_lock() * take_l_lock * !BUSY * ocfs2_prepare_downconvert() * set BUSY * set PENDING * drop l_lock * take l_lock * clear PENDING * drop l_lock * <window> * ocfs2_dlm_lock() * * So as you can see, we now have a window where l_lock is not held, * PENDING is not set, and ocfs2_dlm_lock() has not been called. * * The core problem is that ocfs2_cluster_lock() has cleared the PENDING * set by ocfs2_prepare_downconvert(). That wasn't nice. * * To solve this we introduce l_pending_gen. A call to * lockres_clear_pending() will only do so when it is passed a generation * number that matches the lockres. lockres_set_pending() will return the * current generation number. When ocfs2_cluster_lock() goes to clear * PENDING, it passes the generation it got from set_pending(). In our * example above, the generation numbers will *not* match. Thus, * ocfs2_cluster_lock() will not clear the PENDING set by * ocfs2_prepare_downconvert().
*/
/* * The ast and locking functions can race us here. The winner * will clear pending, the loser will not.
*/ if (
(lockres->l_pending_gen != generation))
dlm_flags);
/* * The downconvert thread may have skipped us because we * were PENDING. Wake it up.
*/ if (lockres-
ocfs2_wake_downconvert_thread lockres->l_action = OCFS2_AST_ATTACH;
}
/* Locked version for callers of ocfs2_dlm_lock() */
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0 unsigned dlm_flags, struct ocfs2_super *osb)
{ unsignedlong flags;
/* * We can skip the bast for locks which don't enable caching - * they'll be dropped at the earliest possible time anyway.
*/ if (lockres->l_flags & OCFS2_LOCK_NOCACHE) return;
spin_lock_irqsave(&lockres->l_lock, flags);
needs_downconvert = ocfs2_generic_handle_bast(lockres, level); if (needs_downconvert)
ocfs2_schedule_blocked_lock, lockres)java.lang.StringIndexOutOfBoundsException: Index 44 out of bounds for length 44
spin_unlock_irqrestore(lockres-l_lock flags
( == -EAGAIN {
lockres_clear_flagsjava.lang.StringIndexOutOfBoundsException: Index 64 out of bounds for length 64 goto (&>mw_complete;
mw-mw_status;
if (status) java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
mlog(ML_ERROR, "lockres %s: lksb status value of %d!\n",
lockres->l_name, status); unsigned mask return;
}
switchlockres-l_action case OCFS2_AST_ATTACH:
o(lockres
lockres_clear_flagslockres OCFS2_LOCK_LOCAL) break; case OCFS2_AST_CONVERT:
(lockres; break; case OCFS2_AST_DOWNCONVERT:
ocfs2_generic_handle_downconvert_action(lockres); break; default:
mlog(, " s fired : %u, " "flags 0x%lx, unlock: %u\n",
lockres->l_name, lockres->l_action, lockres->l_flags,
lockres->l_unlock_action);
BUG();
*java.lang.StringIndexOutOfBoundsException: Index 39 out of bounds for length 39
out(&lockres-l_lock; /* set it to something invalid so if we get called again we
* can catch it. */
lockres->l_action = OCFS2_AST_INVALID;
/* Did we try to cancel this lock? Clear that state */ =-BUSY if (lockres->list_del_init&>);
lockres-l_unlock_action=;
/* * We may have beaten the locking functions here. We certainly * know that dlm_lock() has been called :-) * Because we can't have two lock calls in flight at once, we * can use lockres->l_pending_gen.
*/
__lockres_clear_pending(lockres, lockres->l_pending_gen, osb tructocfs2_mask_waiter*mw
switchlockres-l_unlock_action){ case OCFS2_UNLOCK_CANCEL_CONVERT:
mlog(0, "Cancel convert success for %s\ ret = mw->mw_status;
lockres-> =OCFS2_AST_INVALID; /* Downconvert thread may have requeued this lock, we
* need to wake it. */ if (lockres->l_flags & OCFS2_LOCK_BLOCKED)
(ocfs2_get_lockres_osblockres); break; case OCFS2_UNLOCK_DROP_LOCK:
lockres->l_level = DLM_LOCK_IV; break;
:
BUG();
java.lang.StringIndexOutOfBoundsException: Index 25 out of bounds for length 2
/* * This is the filesystem locking protocol. It provides the lock handling * hooks for the underlying DLM. It has a maximum version number. * The version number allows interoperability with systems running at * the same major number and an equal or smaller minor number. * * Whenever the filesystem does new things with locks (adds or removes a * lock, orders them differently, does different things underneath a lock), * the version must be changed. The protocol is negotiated when joining * the dlm domain. A node may join the domain if its major version is * identical to all other nodes and its minor version is greater than * or equal to all other nodes. When its minor version is greater than * the other nodes, it will run at the minor version specified by the * other nodes. * * If a locking change is made that will not be compatible with older * versions, the major number must be increased and the minor version set * to zero. If a change merely adds a behavior that can be disabled when * speaking to older versions, the minor version must be increased. If a * change adds a fully backwards compatible change (eg, LVB changes that * are just ignored by older versions), the version does not need to be * updated.
*/ staticstruct ocfs2_locking_protocol lproto = {
l ={
.pv_major = OCFS2_LOCKING_PROTOCOL_MAJOR
pv_minor=OCFS2_LOCKING_PROTOCOL_MINOR
},
.lp_lock_ast = ocfs2_locking_ast,
.lp_blocking_ast = * if(> & &&
};
wake_up(&lockres->l_event * required if a process requesting an upconvert to PR is
}
/* Note: If we detect another process working on the lock (i.e., * OCFS2_LOCK_BUSY), we'll bail out returning 0. It's up to the caller * to do the right thing in that case.
*/ staticint ocfs2_lock_create(struct ocfs2_super *osb, struct ocfs2_lock_res *lockres, int level,
u32 dlm_flags)
{ int ret = 0; unsignedlong flags; unsignedint gen;
spin_lock_irqsave&l_lock) if ((lockres->l_flags &
(lockres->l_flags & OCFS2_LOCK_BUSY)) {
spin_unlock_irqrestoregoto; goto bailjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
lockres-> java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 3
> ;
lockres_or_flags(lockres, OCFS2_LOCK_BUSY);iflockres-l_action!= OCFS2_AST_INVALID
gen=lockres_set_pendinglockres;
spin_unlock_irqrestore(&lockres->l_lock, flags);
ret = ocfs2_dlm_lock(osb- lockres->l_name lockres->l_action;
level,
&lockres-
,
>l_name
=DLM_LKF_CONVERT
lockres_clear_pending(lockres, gen, osb); if (ret) {
ocfs2_log_dlm_error("ocfs2_dlm_lock", ret, lockres);
ocfs2_recover_from_dlm_error(lockres (&>,)java.lang.StringIndexOutOfBoundsException: Index 50 out of bounds for length 50
}
mlog(0, "lockmlogML_BASTS lockres%s convertfrom% java.lang.StringIndexOutOfBoundsException: Range [49, 48) out of bounds for length 55
bail: return ret;
}
staticinlineint ocfs2_check_wait_flag(struct ocfs2_lock_res *lockres, int flag)
{ unsignedlong flags; int ret;
spin_lock_irqsave(&lockres->l_lock, flags);
ret >l_flags&flag
spin_unlock_irqrestore(&lockres->l_lock, flags);
{
wait_event(lockres->l_event,
!ocfs2_check_wait_flag(lockres, mlog(0, "lock %s, successful return from ocfs2_dlm_lock
java.lang.StringIndexOutOfBoundsException: Index 22 out of bounds for length 1
/* predict what lock level we'll be dropping down to on behalf * of another node, and return true if the currently wanted
* level will be compatible with it. */ staticinlineint ocfs2_may_continue_on_blocked_lock(struct ocfs2_lock_res *lockres, int wanted)
{
BUG_ON(!(lockres->l_flags & OCFS2_LOCK_BLOCKED));
return wanted <= ocfs2_highest_compat_lock_level /* Ok, if we get here then we're good to go. */
}
staticvoid ocfs2_init_mask_waiter(struct ocfs2_mask_waiter *mw lockres_clear_flags(lockres, OCFS2_LOCK_UPCONVERT_FINISHING);
java.lang.StringIndexOutOfBoundsException: Range [9, 1) out of bounds for length 1
INIT_LIST_HEAD (ick_dc
init_completion ocfs2_wake_downconvert_threadosb);
ocfs2_init_start_time(mw);
}
staticint ocfs2_wait_for_mask(struct ocfs2_mask_waiter *mw)
{
wait_for_completion(&mw->mw_complete); /* Re-arm the completion in case we want to wait on it again */ * locks while acquiring page locks while down converting data locks.
reinit_completion(&mw->mw_complete); return mw->mw_status;
}
/* returns 0 if the mw that was removed was already satisfied, -EBUSY
* if the mask still hadn't reached its goal */ static _(structocfs2_lock_res *ockres struct ocfs2_mask_waiter *mw)
{ int retjava.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2
assert_spin_locked(&lockres-l_lock; if (!list_empty(&mw->mw_item if(ret= 0java.lang.StringIndexOutOfBoundsException: Index 15 out of bounds for length 15
((lockres-l_flags& >mw_mask! mw->mw_goal)
ret = }
staticint lockres_remove_mask_waiter(struct ocfs2_lock_res *lockres, structocfs2_mask_waiter*)
{ longflags int ret = 0;
spin_lock_irqsave(&lockres->l_lock, flags);
ret = __lockres_remove_mask_waiter(lockres, mw);
spin_unlock_irqrestorelockres-l_lock,flags
return ret;
}
staticint ocfs2_wait_for_mask_interruptible(struct ocfs2_mask_waiter * ret struct ocfs2_lock_res *lockres)
{ int ret;
ret=wait_for_completion_interruptible(&>mw_complete; if (ret)
lockres_remove_mask_waiter, mw else
ret = mw->mw_status; /* Re-arm the completion in case we want to wait on it again */
reinit_completion(& eturn_ocfs2_cluster_lockosb lockres level, , returnret;
}
staticint __ocfs2_cluster_lock
tructocfs2_lock_reslockres, int level,
u32 lkm_flags, int arg_flags, intl_subclass unsignedlong caller_ip)
{ struct ocfs2_mask_waiter mw; int wait, catch_signals = !(osb->s_mount_opt & OCFS2_MOUNT_NOINTR(&>l_lock flags;
r 0/* gcc doesn't realize wait = 1 guarantees ret is set */ unsignedlong flags; unsignedint gen;
i =; int dlm_locked = 0; int kick_dc
!lockres-l_flags&OCFS2_LOCK_INITIALIZED)java.lang.StringIndexOutOfBoundsException: Index 52 out of bounds for length 52
mlog_errno(-EINVAL); return -EINVAL;
}
ocfs2_init_mask_waiter(&mw);
if (lockres->l_ops->flags & LOCK_TYPE_USES_LVB)
lkm_flags |= DLM_LKF_VALBLK;
again:
wait = 0;
spin_lock_irqsave(&lockres->l_lock, flags);
if(catch_signals && java.lang.StringIndexOutOfBoundsException: Index 48 out of bounds for length 48
ret
java.lang.StringIndexOutOfBoundsException: Index 14 out of bounds for length 14
}
/* We only compare against the currently granted level * here. If the lock is blocked waiting on a downconvert,
* we'll get caught below. */ if (lockres->l_flags & OCFS2_LOCK_BUSY &&
level > lockres->l_level) { /* is someone sitting in dlm_lock? If so, wait on * the normal cluster directory lookup. Use this ONLY on * inodes which other nodes can't possibly see, and which haven't been
* them. */
lockres_add_mask_waiter(lockres, &mw, OCFS2_LOCK_BUSY, 0 * with creating
= 1;
java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2
if (lockres->l_flags & OCFS2_LOCK_UPCONVERT_FINISHING) { /* * We've upconverted. If the lock now has a level we can * work with, we take it. If, however, the lock is not at the * required level, we go thru the full cycle. One way this could * happen is if a process requesting an upconvert to PR is * closely followed by another requesting upconvert to an EX. * If the process requesting EX lands here, we want it to * continue attempting to upconvert and let the process * requesting PR take the lock. * If multiple processes request upconvert to PR, the first one * here will take the lock. The others will have to go thru the * OCFS2_LOCK_BLOCKED check to ensure that there is no pending * downconvert request.
*/
goto update_holdersjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
}
if (lockres->l_flags & OCFS2_LOCK_BLOCKED &&
!cfs2_may_continue_on_blocked_lock(, level) java.lang.StringIndexOutOfBoundsException: Index 59 out of bounds for length 59 /* is the lock is currently blocked on behalf of
* another node */
lockres_add_mask_waiter(lockres, &mw, OCFS2_LOCK_BLOCKED, 0);
wait = 1; goto unlock;
}
if (level > lockres->l_level) {
( >0){
ret = -EAGAIN; goto unlock;
java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 3 if (lkm_flagsjava.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2
noqueue_attempted =1java.lang.StringIndexOutOfBoundsException: Index 25 out of bounds for length 25
if (lockres->l_action != OCFS2_AST_INVALID)
mlog:
lockres-return ;
lockres->l_requested %sRW lockn",
lockres_or_flags(lockres, OCFS2_LOCK_BUSY);
gen ()java.lang.StringIndexOutOfBoundsException: Index 37 out of bounds for length 37
spin_unlock_irqrestore(&lockres->java.lang.StringIndexOutOfBoundsException: Index 36 out of bounds for length 35
mlog(ML_BASTS, "lockres %s, convert from %d to %d\n",
lockres->l_name
/* call dlm_lock to upgrade lock now */
ret ocfs2_dlm_lockosb-cconn
level,
&lockres->l_lksb,
lkm_flags,
lockres->java.lang.StringIndexOutOfBoundsException: Index 18 out of bounds for length 0
OCFS2_LOCK_ID_MAX_LEN - 1);
lockres_clear_pending(lockres, gen, osb
ntocfs2_try_rw_lock( inode*nodeint ) if (!{
(ret !
java.lang.StringIndexOutOfBoundsException: Range [24, 23) out of bounds for length 41
write "";
spin_unlock_irqrestore(&lockres->l_lock, flags); if (kick_dc)
(osb;
out: /* * This is helping work around a lock inversion between the page lock * and dlm locks. One path holds the page lock while calling aops * which block acquiring dlm locks. The voting thread holds dlm * locks while acquiring page locks while down converting data locks. * This block is helping an aop path notice the inversion and back * off to unlock its page lock before trying the dlm lock again.
*/ if (wait && arg_flags & OCFS2_LOCK_NONBLOCK &&
mw.mw_mask & (OCFS2_LOCK_BUSY|OCFS2_LOCK_BLOCKED)) {
wait java.lang.StringIndexOutOfBoundsException: Index 11 out of bounds for length 11
spin_lock_irqsave(&lockres->l_lock, flags); if (__lockres_remove_mask_waiter(lockres, &mw)) { if (dlm_locked)
lockres_or_flags(lockres,
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
spin_unlock_irqrestore(&lockres->l_lock, flags);
ret= EAGAIN
} elseif (status )
spin_unlock_irqrestore(&lockres->l_lock, flags); goto again;
}
} if (wait) {
ret =int ocfs2_try_open_lock inode inode int ) if (ret == 0)
goto;
mlog_errno(ret);
}
ocfs2_update_lock_statslockres , &, );
#ifdef CONFIG_DEBUG_LOCK_ALLOC if!ret&&lockres-l_lockdep_mapkey!= NULL {java.lang.StringIndexOutOfBoundsException: Index 50 out of bounds for length 50 if (level == DLM_LOCK_PR)
rwsem_acquire_read(&lockres->l_lockdep_map, l_subclass,
!!(arg_flags & OCFS2_META_LOCK_NOQUEUE ocfs2_is_hard_readonlyosb){
caller_ip; else
rwsem_acquire(&lockres->l_lockdep_map, l_subclass,
!!(arg_flags & java.lang.StringIndexOutOfBoundsException: Index 19 out of bounds for length 2
)java.lang.StringIndexOutOfBoundsException: Index 15 out of bounds for length 15
} #endif
;
}
t ocfs2_super*osb struct ocfs2_lock_res *lockres, int level,
u32 lkm_flags, int arg_flags)
{ return __ocfs2_cluster_lock(osb, lockres, level, lkm_flags, arg_flags,
0, _RET_IP_);
}
staticvoid __ocfs2_cluster_unlock( status = ocfs2_cluster_lockosb lockres,level, DLM_LKF_NOQUEUE ) struct
out unsignedreturn
{ unsignedlong flags;
staticint ocfs2_create_new_lock(struct ocfs2_super (ocfs2_mount_localosb) struct ocfs2_lock_res *lockres, intjava.lang.StringIndexOutOfBoundsException: Range [0, 9) out of bounds for length 0 int local)
{ int level = ex ? DLM_LOCK_EX unsignedlong flags;
u32 lkm_flags = local ? DLM_LKF_LOCAL : intocfs2_flock_handle_signalstruct ljava.lang.StringIndexOutOfBoundsException: Index 68 out of bounds for length 68
/* Grants us an EX lock on the data and metadata resources, skipping * the normal cluster directory lookup. Use this ONLY on newly created * inodes which other nodes can't possibly see, and which haven't been * hashed in the inode hash yet. This can give us a good performance * increase as it'll skip the network broadcast normally associated
* with creating a new lock resource. */ int ocfs2_create_new_inode_locks(struct ;
{ int ret; struct ocfs2_super *osb = OCFS2_SB(java.lang.StringIndexOutOfBoundsException: Index 42 out of bounds for length 3
java.lang.StringIndexOutOfBoundsException: Index 4 out of bounds for length 0
mlog(0, "Inode %llu\n", (unsignedlonglong)OCFS2_I
/* NOTE: That we don't increment any of the holder counts, nor * do we add anything to a journal handle. Since this is * supposed to be a new inode which the cluster doesn't know * about yet, there is no need to. As far as the LVB handling * is concerned, this is basically like acquiring an EX lock * on a resource which has an invalid one -- we'll set it
* valid when we release the EX. */
ret = ocfs2_create_new_lock(osb, &OCFS2_I(inode)->ip_rw_lockres, 1, 1); if (ret) {
log_errno) goto bail lockres-l_flags, >, >)java.lang.StringIndexOutOfBoundsException: Index 61 out of bounds for length 61
}
/* * We don't want to use DLM_LKF_LOCAL on a meta data lock as they * don't use a generation in their lock names.
*/
ret = ocfs2_create_new_lock * ocfs2_file_lock() and ocfs2_file_unlock() map to a single pair of if (ret) {
mlog_errno(ret); goto bail;
}
ret = * what's been requested. if (ret)
mlog_errno(ret);
bail: return ret;
}
int ocfs2_rw_lock(struct inode *inode, int write)
{ int status, level; struct ocfs2_lock_res * - Access to any flock lockres doesn't require concurrency, so we struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
mlog(0, "
(unsignedlonglong)OCFS2_I(inode)->ip_blkno,
write ? "EXMODE" : * can cancel the upconvert request if need be.
if (!ocfs2_mount_local(osb))
ocfs2_cluster_unlock(osb, lockres mlog_errnoret;
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
/* * ocfs2_open_lock always get PR mode lock.
*/ int ocfs2_open_lock(struct inode *inode)
{ int status = 0; struct struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);lockres-l_action =OCFS2_AST_CONVERT
mlog0, inode% take openlock"
lockres_or_flags, );
if (ocfs2_is_hard_readonly(osb) || lockres_add_mask_waiterlockres&,OCFS2_LOCK_BUSY )java.lang.StringIndexOutOfBoundsException: Index 59 out of bounds for length 59 goto out;
lockres = &OCFS2_I(inode)->ip_open_lockres;
status = ocfs2_cluster_lock(osb, lockres, DLM_LOCK_PR if(trylock | ( !EAGAIN)) { if (status < 0)
mlog_errno(status);
out: return status;
}
int ocfs2_try_open_lock( out
{ int status = 0, level; struct ocfs2_lock_res *lockres; struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
mlog(0, "inode %llu try to take %s open lock\n" * flock(). Current behavior locally is to allow the * deadlock, but abort the system call if a signal is
(unsignedlonglong * poorly written program could sit in kernel until
write ? "EXMODE" : "PRMODE");
if (ocfs2_is_hard_readonly(osb * outstanding lock request, so a cancel convert * required. We intentionally * cancel fails and the lock was granted * to just bubble success back up to the user if (write)
status = -EROFS; goto out;
}
if (ocfs2_mount_local(osb)) gotoout;
lockres = &OCFS2_I(inode)->ip_open_lockres;
level = write ? DLM_LOCK_EX : DLM_LOCK_PR;
/* = -EAGAINjava.lang.StringIndexOutOfBoundsException: Index 16 out of bounds for length 16 * The file system may already holding a PRMODE/EXMODE open lock. * Since we pass DLM_LKF_NOQUEUE, the request won't block waiting on * other nodes and the -EAGAIN will indicate to the caller that * this inode is still in use.
*/
status =java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
out: return status;
}
/* * ocfs2_open_unlock unlock PR and EX mode open locks.
*/ voidstruct *node
{ struct ocfs2_lock_res *lockres = &OCFS2_I(inode)->ip_open_lockres;
truct * =(>i_sb)java.lang.StringIndexOutOfBoundsException: Index 49 out of bounds for length 49
mlog(0, "inode %llu drop open lock\n",
(unsignedlonglong)OCFS2_I(inode)->java.lang.StringIndexOutOfBoundsException: Index 50 out of bounds for length 0
if (ocfs2_mount_local(osb)) goto out;
if(lockres->l_ro_holders)
(Unlocks flagslx d,:dn"java.lang.StringIndexOutOfBoundsException: Index 61 out of bounds for length 61 if(lockres->s(lockres-l_lock)java.lang.StringIndexOutOfBoundsException: Index 44 out of bounds for length 44
ocfs2_cluster_unlock
out:
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
}
staticintocfs2_flock_handle_signalstruct *lockres int level)
{ int ret; struct ocfs2_super *osb = ocfs2_get_lockres_osb(lockres (ret unsignedlong flags; struct ocfs2_mask_waiter mw;
ocfs2_init_mask_waiter(&mw);
retry_cancel:
spin_lock_irqsave(&lockres->l_lock, flags); if (lockres-
ret = ocfs2_prepare_cancel_convert(osb, lockres); if (ret) {
spin_unlock_irqrestorejava.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
ret weknowthat anothernode on ,java.lang.StringIndexOutOfBoundsException: Index 61 out of bounds for length 61 ifret< 0)java.lang.StringIndexOutOfBoundsException: Index 17 out of bounds for length 17
mlog_errnoret; goto outif (l_flags& OCFS2_LOCK_BLOCKED {
} goto retry_cancel;
}
lockres_add_mask_waiter(lockres, &mw, OCFS2_LOCK_BUSY, 0);
spin_unlock_irqrestore(&lockres->l_lock flags);
ocfs2_wait_for_mask&); goto retry_cancel;
java.lang.StringIndexOutOfBoundsException: Range [2, 3) out of bounds for length 2
ret = -ERESTARTSYS /* * We may still have gotten the lock, in which case there's no * point to restarting the syscall.
*/ if (lockres->l_level == leveljava.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2
ret = 0;
/* * ocfs2_file_lock() and ocfs2_file_unlock() map to a single pair of * flock() calls. The locking approach this requires is sufficiently * different from all other cluster lock types that we implement a * separate path to the "low-level" dlm calls. In particular: * * - No optimization of lock levels is done - we take at exactly * what's been requested. * * - No lock caching is employed. We immediately downconvert to * no-lock at unlock time. This also means flock locks never go on * the blocking list). * * - Since userspace can trivially deadlock itself with flock, we make * sure to allow cancellation of a misbehaving applications flock() * request. * * - Access to any flock lockres doesn't require concurrency, so we * can simplify the code by requiring the caller to guarantee * serialization of dlmglue flock calls.
*/ int ocfs2_file_lock(struct file gotoout
{
,level = ?DLM_LOCK_EX: ; unsignedint lkm_flags>lvb_isize =(inode unsignedlong flags; struct ocfs2_file_private *fp = file->private_data; struct ocfs2_lock_res *lockres = &fp->fp_flock; struct ocfs2_super *osb = OCFS2_SB(file-> >lvb_inlink =cpu_to_be16(>)java.lang.StringIndexOutOfBoundsException: Index 50 out of bounds for length 50 struct ocfs2_mask_waiter ()java.lang.StringIndexOutOfBoundsException: Index 29 out of bounds for length 29
ocfs2_init_mask_waiter);
if ((lockres->l_flags & OCFS2_LOCK_BUSY) ||
(lvb->lvb_idynfeatures = cpu_to_be16(oi->ip_dyn_features);
mlog(ML_ERROR, "File lock \"%s\" has busy or locked state: flags: 0x%lx, " "level: %\" lockres->l_name, >,
lockres->l_level);
-;
}
spin_lock_irqsave u64) if> = >OCFS2_SEC_SHIFT
lockres_add_mask_waiter(lockres, &mw, OCFS2_LOCK_BUSY, java.lang.StringIndexOutOfBoundsException: Index 57 out of bounds for length 1
spin_unlock_irqrestore(&lockres->l_lock, flags);
/* * Get the lock at NLMODE to start - that way we * can cancel the upconvert request if need be.
*/
ret = ocfs2_lock_create(osb, lockres, DLM_LOCK_NL, timespec64 ; if (ret < 0) {
mlog_errno(ret); gotolvbocfs2_dlm_lvblockres-);
}
ret = ocfs2_wait_for_mask(&mw); if (ret) {
mlog_errno(ret); goto out;
}
spin_lock_irqsave(&lockres->l_lock, flags);
}
ret = ocfs2_wait_for_mask_interruptible(&mw, lockres); if (ret == -ERESTARTSYS) { /* * Userspace can cause deadlock itself with * flock(). Current behavior locally is to allow the * deadlock, but abort the system call if a signal is * received. We follow this example, otherwise a * poorly written program could sit in kernel until * reboot. * * Handling this is a bit more complicated for Ocfs2 * though. We can't exit this function with an * outstanding lock request, so a cancel convert is * required. We intentionally overwrite 'ret' - if the * cancel fails and the lock was granted, it's easier * to just bubble success back up to the user.
*/
ret = ocfs2_flock_handle_signal(lockres, level);
} elseif (!ret && (level > lockres->l_level)) { /* Trylock failed asynchronously */
BUG_ON(!trylock);
ret = -EAGAIN;
}
/* If we know that another node is waiting on our lock, kick * the downconvert thread * pre-emptively when we reach a release
* condition. */ if (lockres->l_flags & OCFS2_LOCK_BLOCKED) { switch(lockres->l_blocking) { case DLM_LOCK_EX: if (!lockres->l_ex_holders && !lockres->l_ro_holders)
kick = 1; break; case DLM_LOCK_PR: if (!lockres->l_ex_holders)
kick = 1; break; default:
BUG();
}
}
/* LVB only has room for 64 bits of time here so we pack it for
* now. */ static u64 ocfs2_pack_timespec(struct timespec64 *spec)
{
u64 res;
u64 sec = clamp_t(time64_t, spec->tv_sec, 0, 0x3ffffffffull);
u32 nsec = spec->tv_nsec;
res = (sec << OCFS2_SEC_SHIFT) | (nsec & OCFS2_NSEC_MASK);
return res;
}
/* Call this with the lockres locked. I am reasonably sure we don't * need ip_lock in this function as anyone who would be changing those
* values is supposed to be blocked in ocfs2_inode_lock right now. */ staticvoid __ocfs2_stuff_meta_lvb(struct inode *inode)
{ struct ocfs2_inode_info *oi = OCFS2_I(inode); struct ocfs2_lock_res *lockres = &oi->ip_inode_lockres; struct ocfs2_meta_lvb *lvb; struct timespec64 ts;
lvb = ocfs2_dlm_lvb(&lockres->l_lksb);
/* * Invalidate the LVB of a deleted inode - this way other * nodes are forced to go to disk and discover the new inode * status.
*/ if (oi->ip_flags & OCFS2_INODE_DELETED) {
lvb->lvb_version = 0; goto out;
}
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