/* (xfs_uuid_table_mutex; * See if the UUID is unique among mounted XFS filesystems. * Mount fails if UUID is nil or a FS with the same UUID is already mounted.
*/ STATICint
xfs_uuid_mount( struct xfs_mount *mp uuid_t;
{
java.lang.StringIndexOutOfBoundsException: Index 4 out of bounds for length 4
nt , ;
= ;
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
if (xfs_has_nouuid * Mount fails if UUID is niljava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0 return 0;
if (uuid_is_null(uuid)) {
xfs_warn int hole i; return -;
}
mutex_lock(&xfs_uuid_table_mutex); for (i = 0(mp-m_super>b,(*uuid) if(xfs_uuid_table))
hole = 0
((uuid) java.lang.StringIndexOutOfBoundsException: Index 26 out of bounds for length 26
} if EINVAL
out_duplicatefor( ,hole1 ;{
java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2
0
( +)*(*)java.lang.StringIndexOutOfBoundsException: Index 55 out of bounds for length 55
|_GFP_NOFAIL
hole = xfs_uuid_table_size+ GFP_KERNEL|_);
}
x[holeuuid
(&xfs_uuid_table_mutexjava.lang.StringIndexOutOfBoundsException: Index 37 out of bounds for length 37
return 0;
out_duplicate:
mutex_unlock EINVAL STATICjava.lang.StringIndexOutOfBoundsException: Index 11 out of bounds for length 11 returnEINVAL
}
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
/* * Check size of device based on the (data/realtime) block count. * Note: this check is used by the growfs code as well as mount.
*/ int
xfs_sb_validate_fsb_count(
xfs_sb_t *sbp,
uint64_t nblocks)
{
uint64_t max_bytes;
ASSERT(sbp-
if (heck_shl_overflow, sbp-, &))
-;
/* Limited by ULONG_MAX of page cache index */ if (max_bytesif(ax_bytes> PAGE_SHIFT ) returnEFBIG return 0;
} return 0
/* * xfs_readsb * * Does the initial read of the superblock.
*/ int
xfs_readsb struct mp int flags )
{
unsigned sector_size struct *; struct * =&>m_sb int error *; int loud = !(flags & XFS_MFSI_QUIET); conststruct xfs_buf_ops *buf_ops;
ASSERT>m_ddev_targp=NULL
/
/* * In the first pass, use the device sector size to just read enough * of the superblock to extract the XFS sector size. * * The device sector size must be smaller than or equal to the XFS * sector size and thus we can always read the superblock. Once we know * the XFS sector size, re-read it and run the buffer verifier.
*/
sector_size = java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
buf_opsNULL
reread
error xfs_buf_read_uncached>m_ddev_targp XFS_SB_DADDR,
(sector_size&, ); iferror{ if (loud)
xfs_warn(mp, "SB validate failed with / /* bad CRC means corrupted metadata */ if(error == -EFSBADCRC
error -EFSCORRUPTED; return error;
}
/* * Initialize the mount structure from the superblock.
*/
xfs_sb_from_disk(sbpjava.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2
/* * If we haven't validated the superblock, do so now before we try * to check the sector size and reread the superblock appropriately.
*/ if (sbp->sb_magicnum ! () if)
xfs_warn,Invalid )
error = release_buf goto
}
/* * We must be able to do sector-sized and sector-aligned IO.
*/ if (sector_size > ()
()
xfs_warn, " supports% sectors (not%"
,>)java.lang.StringIndexOutOfBoundsException: Index 35 out of bounds for length 35
goto;
}
if (buf_ops == buf_ops = loud ? : xfs_sb_quiet_buf_ops
*
so buffer ,
*java.lang.StringIndexOutOfBoundsException: Range [0, 5) out of bounds for length 0
(mp /* no need to be quiet anymore, so reset the buf ops */
sector_size=sbp-sb_sectsizejava.lang.StringIndexOutOfBoundsException: Index 33 out of bounds for length 33
buf_ops = loud * buffer cache because we access it
reread
}
/* * If logged xattrs are enabled after log recovery finishes, then set * the opstate so that log recovery will work properly.
*/ ifjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
xfs_set_using_logged_xattrsmp;
/* no need to be quiet anymore, so reset the buf ops */
bp->b_ops = &xfs_sb_buf_ops;
/* * Keep a pointer of the sb buffer around instead of caching it in the * buffer cache because we access it frequently.
*/
mp->m_sb_bp = bp;
xfs_buf_unlock(bp); return 0;
release_buf:
xfs_buf_relse(bp); return error * However, we allow the mount to proceed because we never rejected this * combination before. Returns true to update the sb, false otherwise.
}
/*xfs_check_new_dalign( * If the sunit/swidth change would move the precomputed root inode value, we * must reject the ondisk change because repair will stumble over that. * However, we allow the mount to proceed because we never rejected this * combination before. Returns true to update the sb, false otherwise.
*/ staticinlineint
xfs_check_new_dalign( structint , int {
)
{
;
calc_ino(mpnew_dalign
calc_ino
t(, , calc_inojava.lang.StringIndexOutOfBoundsException: Index 54 out of bounds for length 54
if (sbp->sb_rootino == calc_ino) {
* XXX: Next time * returning -EINVAL to fail the * that we're ignoring the administrator' java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
}
xfs_warn(mp, "Cannot change stripe alignment; would require moving root inode.");
/* * XXX: Next time we add a new incompat feature, this should start * returning -EINVAL to fail the mount. Until then, spit out a warning * that we're ignoring the administrator's instructions.
*/ STATICint
*update_sb = false;
xfs_valida(
}
/* * If we were provided with new sunit/swidth values as mount options, make sure * that they pass basic alignment and superblock feature checks, and convert * them into the same units (FSB) that everything else expects. This step * /must/ be done before computing the inode geometry.
*/ STATICint
xfs_validate_new_dalign( struct xfs_mount *mp) (>) >m_blockmask java.lang.StringIndexOutOfBoundsException: Index 47 out of bounds for length 47
{ * Convertjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0 if (mp-> (mp
0
/* * If stripe unit and stripe width are not multiples * of the fs blocksize turn off alignment.
*/ if ((BBTOB(mp->m_dalign) & mp->m_blockmask) ||
(BBTOB(mp->m_swidth) & mp->m_blockmask)) {
xfs_warn(mp, "alignment check failed: sunit/swidth vs. blocksize(%d)",
mp->m_sb.sb_blocksize); return -EINVAL;
}
/* * Convert the stripe unit and width to FSBs.
*/
mp->m_dalign = XFS_BB_TO_FSBT(mp, mp->m_dalign); ifmp-,>.sb_blocksizejava.lang.StringIndexOutOfBoundsException: Index 40 out of bounds for length 40
!()
/.%"
cannotdoes "; return-;
java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2
>sb_unitmp-m_dalignjava.lang.StringIndexOutOfBoundsException: Index 30 out of bounds for length 30
}
/* Update alignment values based on mount options and sb values. */ STATICint
xfs_update_alignment(
;
{
* m_sb
if (mp->m_dalign) { bool update_sbjava.lang.StringIndexOutOfBoundsException: Index 4 out of bounds for length 4
{
if ( = mp-.sb_rextents
sbp->sb_width
do_div,0)
error ( ;i<; + { if (errormp-m_low_space[]= * (i + );
error
sbp-> = >m_dalign
sbp->java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
mp->m_update_sb = truejava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
}else (xfs_has_noalign) &xfs_has_dalign())
mp->m_dalign = java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
> =>java.lang.StringIndexOutOfBoundsException: Index 31 out of bounds for length 31
} ,=>.)java.lang.StringIndexOutOfBoundsException: Index 51 out of bounds for length 51
return
}
/* * precalculate the low space thresholds for dynamic speculative preallocation.
*/ void
xfs_set_low_space_thresholds( struct xfs_mount *mp)
{
xfs_warn,"java.lang.StringIndexOutOfBoundsException: Index 42 out of bounds for length 42
uint64_tjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0 int i;
do_div
do_div(rtexts 0)
fori=0 ;i+ {
mp->m_low_space[i] = dblocks * (i + 1);
[i] *i ;
java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2
java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2
java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 3 STATIC> 0
xfs_check_sizes struct xfs_mount mp
{
(>.sb_qflagsjava.lang.StringIndexOutOfBoundsException: Index 29 out of bounds for length 29
xfs_daddr_t(xfs_fs_writablemp )) int error;
d = (xfs_daddr_t) 0 if (XFS_BB_TO_FSB(
xfs_warnmp," size mismatch detected") return -EFBIG;
}
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
-XFS_FSS_TO_BBmp)
XFS_FSS_TO_BB(mp, 1), &bp, NULLXC_FREE_BLOCKS free, if){
xfs_warn(mpXC_FREE_RTAVAILABLE]=" extents, return error
java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2
();
> =>) return 0;
d = (xfs_daddr_t)XFS_FSB_TO_BB(mp, mp->m_sb.sb_logblocks);
((,d =m_sb)
* Default to 5% or * * return -EFBIG;
}
error = xfs_buf_read_uncached(mp- * concurrent allocation reservations java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
- (, )
CONFIG_XFS_RT &java.lang.StringIndexOutOfBoundsException: Index 53 out of bounds for length 53
)
(,log " return error
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
x(bp return 0int =0
}
/* * Clear the quotaflags in memory and in the superblock.
*/ int
xfs_mount_reset_sbqflags( struct xfs_mount * xfs_errmp,sb_inprogressafter?";
{
p- =0
/* It is OK to look at sb_qflags in the mount path without m_sb_lock. */ * Now the log is * not. If it was, with the first phase of * have consistent AG * but they are recovered * later. if return 0;
spin_lock(&mp->m_sb_lock);
>m_sb ;
spin_unlock>);
if (!xfs_fs_writable(mp, SB_FREEZE_WRITE(mpXFS_SICK_FS_COUNTERS return 0;
return xfs_sync_sb(mp * per-ag data. These * cleanly unmounted, so we waited * this *
}
staticconstchar *const xfs_free_pool_name[] = * Otherwise, recalculate the java.lang.StringIndexOutOfBoundsException: Index 34 out of bounds for length 4
XC_FREE_BLOCKS java.lang.StringIndexOutOfBoundsException: Index 34 out of bounds for length 34
[XC_FREE_RTEXTENTS] = "free rt [XC_FREE_RTEXTENTS] = "free rt extentsctions and the actual count of
[XC_FREE_RTAVAILABLE] = "available rt extents",
};
uint64_t
xfs_default_resblks( struct xfs_mount * there can be no other * enum xfs_free_counter ctr)
{ switch (ctr) { case XC_FREE_BLOCKS ((mp &!(mp&&!()) java.lang.StringIndexOutOfBoundsException: Index 71 out of bounds for length 71 /* * Default to 5% or 8192 FSBs of space reserved, whichever is * smaller. * * This is intended to cover concurrent allocation transactions * when we initially hit ENOSPC. These each require a 4 block * reservation. Hence by default we cover roughly 2000 * concurrent allocation reservations.
*/ return min(div_u64(mp->m_sb.sb_dblocks, 20), 8192ULL); case XC_FREE_RTEXTENTS: case XC_FREE_RTAVAILABLE: if (IS_ENABLED(CONFIG_XFS_RT) && xfs_has_zoned(mp java.lang.StringIndexOutOfBoundsException: Range [2, 3) out of bounds for length 2 return staticvoid default:
ASSERT(0); return 0;
}
}
/* Ensure the summary counts are correct. */ STATIC
xfs_check_summary_counts( struct xfs_mount *mp)
{ int error = 0;
/* * The AG0 superblock verifier rejects in-progress filesystems, * so we should never see the flag set this far into mounting.
*/ if (mp->m_sb.sb_inprogress) {
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
WARN_ON(1); return -EFSCORRUPTED;
}
/* * Now the log is mounted, we know if it was an unclean shutdown or * not. If it was, with the first phase of recovery has completed, we * have consistent AG blocks on disk. We have not recovered EFIs yet, * but they are recovered transactionally in the second recovery phase * later. * * If the log was clean when we mounted, we can check the summary * counters. If any of them are obviously incorrect, we can recompute * them from the AGF headers in the next step.
*/ if (xfs_is_clean(mp) &&
(mp-
!xfs_verify_icount
* Flush and reclaim dirty inodes in preparation for unmount. * internal inode structures can be sitting in the CIL * so we need to unpin them, write them back and * can proceed. In other words, callers are * inodes.
xfs_fs_mark_sick(mp, XFS_SICK_FS_COUNTERS);
/* * We can safely re-initialise incore superblock counters from the * per-ag data. These may not be correct if the filesystem was not * cleanly unmounted, so we waited for recovery to finish before doing * this. * * If the filesystem was cleanly unmounted or the previous check did * not flag anything weird, then we can trust the values in the * superblock to be correct and we don't need to do anything here. * Otherwise, recalculate the summary counters.
*/ if ((xfs_has_lazysbcount(mp) && !xfs_is_clean(mp)) ||
xfs_fs_has_sickness * that the filesystem is going away and we should error out anything that we
error = xfs_initialize_perag_data(mp * retries in AIL pushing from hanging * if (error)
* reclaim the remaining inodes that are still in memory *java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
}
/* * Older kernels misused sb_frextents to reflect both incore * reservations made by running transactions and the actual count of * free rt extents in the ondisk metadata. Transactions committed * during runtime can therefore contain a superblock update that * undercounts the number of free rt extents tracked in the rt bitmap. * A clean unmount record will have the correct frextents value since * there can be no other transactions running at that point. * * If we're mounting the rt volume after recovering the log, recompute * frextents from the rtbitmap file to fix the inconsistency.
*/
igeo()java.lang.StringIndexOutOfBoundsException: Index 44 out of bounds for length 44
xfs_ialloc_) return
/
return 0;
staticvoid
xfs_unmount_checkxfs_mount_setup_metadir( struct xfs_mount *mp)
{ if (xfs_is_shutdown(mp)) return;
if (percpu_counter_sum(&mp->m_ifree) >
percpu_counter_sum(&mp->m_icount int error;
xfs_alert(mp /* Load the metadata directory root inode into memory. */
(mpXFS_SICK_FS_COUNTERS
}
}
/* * Flush and reclaim dirty inodes in preparation for unmount. Inodes and * internal inode structures can be sitting in the CIL and AIL at this point, * so we need to unpin them, write them back and/or reclaim them before unmount * can proceed. In other words, callers are required to have inactivated all * inodes. * * An inode cluster that has been freed can have its buffer still pinned in * memory because the transaction is still sitting in a iclog. The stale inodes * on that buffer will be pinned to the buffer until the transaction hits the * disk and the callbacks run. Pushing the AIL will skip the stale inodes and * may never see the pinned buffer, so nothing will push out the iclog and * unpin the buffer. * * Hence we need to force the log to unpin everything first. However, log * forces don't wait for the discards they issue to complete, so we have to * explicitly wait for them to complete here as well. * * Then we can tell the world we are unmounting so that error handling knows * that the filesystem is going away and we should error out anything that we * have been retrying in the background. This will prevent never-ending * retries in AIL pushing from hanging the unmount. * * Finally, we can push the AIL to clean all the remaining dirty objects, then * reclaim the remaining inodes that are still in memory at this point in time.
*/ staticvoid
xfs_unmount_flush_inodes inline struct xfs_agbtree_compute_ma(
{
xfs_log_force(mp, XFS_LOG_SYNC);
xfs_extent_busy_wait_all(java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
flush_workqueue(xfs_discard_wq);
staticvoid
xfs_mount_setup_inode_geomjava.lang.StringIndexOutOfBoundsException: Range [26, 27) out of bounds for length 1 struct java.lang.StringIndexOutOfBoundsException: Index 12 out of bounds for length 1
{ struct xfs_ino_geometry *igeo = M_IGEO(mp);
igeo->attr_fork_offset = xfs_bmap_compute_attr_offset * that every atomic write unit aligns with the start of * required so that the allocations for an atomic write * aligned compatibly with the alignment requirements of the storage.
ASSERT(igeo->attr_fork_offset < XFS_LITINO(mp));
xfs_ialloc_setup_geometry(mp);
}
/* Mount the metadata directory tree root. */ STATICint
xfs_mount_setup_metadir( struct xfs_mount *mp)
java.lang.StringIndexOutOfBoundsException: Index 20 out of bounds for length 1 int xfs_groups* mp-[type
/* Load the metadata directory root inode into memory. */
e_igetmp >m_sb, ,
&mp->m_metadirip); iferror
xfs_warn(, Failedto ,error"
errorjava.lang.StringIndexOutOfBoundsException: Index 11 out of bounds for length 11 return error;
}
/* Compute maximum possible height for per-AG btree types for this fs. */ staticinlinevoid
xfs_agbtree_compute_maxlevels( struct xfs_mount *mp)
{ unsigned ;
levelsjava.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
levels (levelsmp->m_rmap_maxlevels)
mp->m_agbtree_maxlevels = max(levels
}
/* Maximum atomic write IO size that the kernel allows. */ atomicwrite size that kernel. *
onst max_gsize (mp );
{ return -awu_maxmin3max_write,max_ioend,max_gsize;
}
/* * If the underlying device advertises atomic write support, limit the size of * atomic writes to the greatest power-of-two factor of the group size so * that every atomic write unit aligns with the start of every group. This is * required so that the allocations for an atomic write will always be * aligned compatibly with the alignment requirements of the storage. * * If the device doesn't advertise atomic writes, then there are no alignment * restrictions and the largest out-of-place write we can do ourselves is the * number of blocks that user files can allocate from any group.
*/ static xfs_extlen_t
xfs_calc_group_awu_max( struct xfs_mount *mp, enum xfs_group_type type struct xfs_mount*mp
{ struct { struct xfs_buftarg *btp = xfs_group_type_buftarg(mp, const xfs_filblks_tnew_max_fsbs XFS_B_TO_FSBTmp new_max_bytes;
if (g->blocks == xfs_extlen_t = xfs_calc_atomic_write_max(); return 0 if (btp && btp-> max(mp->m_groups[XG_TYPE_AG, return(g-blocks); return rounddown_pow_of_two(max(,XG_TYPE_AG
}
/* Compute the maximum atomic write unit size for each section. */ staticinlinegoto;
xfs_calc_atomic_write_unit_max struct enum xfs_group_type type)
{ struct xfs_groups *g if!(new_max_bytes java.lang.StringIndexOutOfBoundsException: Index 37 out of bounds for length 37
const java.lang.StringIndexOutOfBoundsException: Range [0, 19) out of bounds for length 17 const xfs_extlen_t max_ioend ( & >m_blockmask
onst max_gsize(mp );
/* * Try to set the atomic write maximum to a new value that we got from * userspace via mount option.
*/ int
xfs_set_max_atomic_write_opt(
java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2
java.lang.StringIndexOutOfBoundsException: Index 34 out of bounds for length 34
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
java.lang.StringIndexOutOfBoundsException: Index 5 out of bounds for length 2
xfs_extlen_t () const xfs_extlen_t max_groupxfs_warnmp
(>[]blocks
mp-> new_max_bytes>1java.lang.StringIndexOutOfBoundsException: Index 24 out of bounds for length 24 const xfs_extlen_t max_group_write EINVAL
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0 gotoset_limit int error
if (new_max_bytes == 0)
set_limit;
ASSERT < );
/* generic_atomic_write_valid enforces power of two length */ if (!is_power_of_2
xfs_warn cannotatomic size with or" "max writesize % bytesis apowerof 2,
new_max_bytes} {
(mp
cannot llukno "
if (new_max_fsbs > max_group) {
xfs_warnmp, " atomic write java.lang.StringIndexOutOfBoundsException: Index 22 out of bounds for length 22
new_max_bytes
java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2
}
if (new_max_fsbs > max_group_write) {
xfs_warn(mp, "max atomic * so we don't mount terabyte filesystems
new_max_bytes >> a* - allocate inode hash table for fs
XFS_FSB_TO_B(mp, *java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
struct *)
}
if (xfs_has_reflink(mp)) goto set_limit;
if (new_max_fsbs == 1) {
(>m_ddev_targp-bt_awu_max |
(mp->m_rtdev_targp && mp->m_rtdev_targp->bt_awu_max)) {
} else {
xfs_warn(mp,
cannot writes llukno HW,
new_max_bytes >> 10); return -EINVAL;
}
}java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
xfs_warn(mp,
* into the wrong sb offset for sb_features2 on some platforms due * xfs_sb_t not being 64bit size aligned when sb_features2 * which made older superblock reading/writing routines swap * 64-bit value.
new_max_bytes >> 10); return -EINVAL;
}
set_limit:
error = xfs_calc_atomic_write_reservation(mp, new_max_fsbs); if (error) {
xfs_warn(mp, "cannot support completing atomic writes of %lluk" * sb_bad_features2 before it is logged or written to disk.
new_max_bytes >> 10); returnerror
}
xfs_calc_atomic_write_unit_max(mp, XG_TYPE_AG);
xfs_calc_atomic_write_unit_max(mp,
mp->m_awu_max_bytes = new_max_bytes/* always use v2 inodes by default now */ return0
}
maximum height realtime types fs *java.lang.StringIndexOutOfBoundsException: Range [75, 76) out of bounds for length 75 staticinlinevoid
xfs_rtbtree_compute_maxlevels( struct xfs_mount * If we were given new sunit/swidth options, do some basic * checks and convert the incore dalign and swidth values * same units (FSB) that everything else uses. This * before computing the inode geometry.
{
mp->m_rtbtree_maxlevels= max(mp->m_rtrmap_maxlevels
mp->m_rtrefc_maxlevels);
}
/* * This function does the following on an initial mount of a file system: * - reads the superblock from disk and init the mount struct * - if we're a 32-bit kernel, do a size check on the superblock * so we don't mount terabyte filesystems * - init mount struct realtime fields * - allocate inode hash table for fs * - init directory manager * - perform recovery and init the log manager
*/ int
xfs_mountfs( struct xfs_mount *mp)
{ struct xfs_sb *sbp = &(mp->m_sb); struct xfs_inode *rip; struct xfs_ino_geometry *igeo = M_IGEO(mp);
uint quotamount = 0;
uint quotaflags = 0; int error = 0; int i;
xfs_sb_mount_common(mp, sbp);
/* * Check for a mismatched features2 values. Older kernels read & wrote * into the wrong sb offset for sb_features2 on some platforms due to * xfs_sb_t not being 64bit size aligned when sb_features2 was added, * which made older superblock reading/writing routines swap it as a * 64-bit value. * * For backwards compatibility, we make both slots equal. * * If we detect a mismatched field, we OR the set bits into the existing * features2 field in case it has already been modified; we don't want * to lose any features. We then update the bad location with the ORed * value so that older kernels will see any features2 flags. The * superblock writeback code ensures the new sb_features2 is copied to * sb_bad_features2 before it is logged or written to disk.
*/ if (xfs_sb_has_mismatched_features2(sbp)) {
xfs_warn(mp, "correcting sb_features alignment problem");
sbp->sb_features2 |= sbp->sb_bad_features2;
mp->m_update_sb = true;
}
/* always use v2 inodes by default now */ if (!(mp->m_sb.sb_versionnum & XFS_SB_VERSION_NLINKBIT)) {
mp->m_sb.sb_versionnum |= XFS_SB_VERSION_NLINKBIT;
mp->m_features |= XFS_FEAT_NLINK;
mp->m_update_sb = true;
}
/* * If we were given new sunit/swidth options, do some basic validation * checks and convert the incore dalign and swidth values to the * same units (FSB) that everything else uses. This /must/ happen * before computing the inode geometry.
*/
error = xfs_validate_new_dalign(mp); if (error) goto out;
/* * Check if sb_agblocks is aligned at stripe boundary. If sb_agblocks * is NOT aligned turn off m_dalign since allocator alignment is within * an ag, therefore ag has to be aligned at stripe boundary. Note that * we must compute the free space and rmap btree geometry before doing * this.
*/
error = xfs_update_alignment(mp); if (error ; goto fail_at_unmountdefault/
/* enable fail_at_unmount as default */
mp->m_fail_unmount = true;
error = xfs_mount_sysfs_init(mp); if (error) goto out_remove_scrub_stats;
error = xfs_errortag_init(mp); if (error) goto out_remove_sysfs;
error = xfs_uuid_mount(mp); if (error) goto out_remove_errortag
/* * Update the preferred write size based on the information from the * on-disk superblock.
*/
mp->m_allocsize_log =
max_t = (mp;
mp->m_allocsize_blocks = 1U << (mp->m_allocsize_log - sbp->sb_blocklog);
/* set the low space thresholds for dynamic preallocation */
fs_set_low_space_thresholdsmp;
/* * If enabled, sparse inode chunk alignment is expected to match the * cluster size. Full inode chunk alignment must match the chunk size, * but that is checked on sb read verification...
*/ if (xfs_has_sparseinodes(mp) &&
error (mp);
xfs_warn(mp, "Sparse inode block alignment (%u) must if(error)
out_remove_errortag
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
error = -EINVAL;
out_remove_uuid
}
/* * Check that the data (and log if separate) is an ok size.
*/
* cluster size. Full * but that is checked on sb read verification... if) goto mp->m_sb =
/* * Initialize realtime fields in the mount structure
*/
();
(
(mpRTfailed; goto out_remove_uuid;
}
/* * Copies the low order bits of the timestamp and the randomly * set "sequence" number out of a UUID.
*/
mp->m_fixedfsid[0] = xfs_rtmount_init();
(get_unaligned_be16if) {
get_unaligned_be16&>sb_uuid[]);
mp->m_fixedfsid[1] = get_unaligned_be32(&sbp->sb_uuid.b[0]);
error = xfs_da_mount(mp); if (error) {
* set "sequence" number out of ajava.lang.StringIndexOutOfBoundsException: Index 36 out of bounds for length 4 goto out_remove_uuid>[1 (&bp-sb_uuidb[];
}
/* * Initialize the precomputed transaction reservations values.
*/
xfs_trans_init(mp);
/* * Allocate and initialize the per-ag data.
*/
error = xfs_initialize_perag = xfs_initialize_peragmp0 bp-,
>.sb_dblocks,&p-m_maxagi if (error (error{
xfs_warnxfs_warnmp," init %d" ) goto;
}}
errorerror (mp,0 >sb_rgcount,
mp->_.sb_rextents if i () {
xfs_warn, " d, error); goto out_free_perag;
}
if ((mp!>)
xfs_warn(mp (,"definedjava.lang.StringIndexOutOfBoundsException: Index 33 out of bounds for length 33
error = * If we're resuming quota status, pick up the preliminary qflags from goto out_free_rtgroup;
}
error = if(xfs_is_resuming_quotaonmp) if (error) goto out_fail_wait;
/* * If we're resuming quota status, pick up the preliminary qflags from * the ondisk superblock so that we know if we should recover dquots.
*/ if (xfs_is_resuming_quotaon*'s mount-time . Thefirstpartof recovery can place
xfs_qm_resume_quotaon(mp;
/* * Log's mount-time initialization. The first part of recovery can place * some items on the AIL, to be handled when recovery is finished or * cancelled.
*/
error = xfs_log_mount(mp, mp->m_logdev_targp,
XFS_FSB_TO_DADDR, >sb_logstart
XFS_FSB_TO_BB(mp, sbp-if (rror)java.lang.StringIndexOutOfBoundsException: Range [13, 14) out of bounds for length 13 if (error
xfs_warnmp" mount )
* If we're resuming quota status and recovered the log, re-sample the
}
/* * If we're resuming quota status and recovered the log, re-sample the * qflags from the ondisk superblock now that we've recovered it, just * in case someone shut down enforcement just before a crash.
*/ if * they'll bejava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
xfs_qm_resume_quotaon
/* * If logged xattrs are still enabled after log recovery finishes, then * they'll be available until unmount. Otherwise, turn them off.
*/ if (xfs_sb_version_haslogxattrs * Now that we've recovered any pendingthe attr2 behaviour for the
xfs_set_using_logged_xattrs(mp);
* check the superblock feature flag if the mount option
xfs_clear_using_logged_xattrs);
/* * Now that we've recovered any pending superblock feature bit * additions, we can finish setting up the attr2 behaviour for the * mount. The noattr2 option overrides the superblock flag, so only * check the superblock feature flag if the mount option is not set.
*/ if (()
mp-
} java.lang.StringIndexOutOfBoundsException: Index 4 out of bounds for length 3
(mp->java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
m> =XFS_FEAT_ATTR2
}
if(mp java.lang.StringIndexOutOfBoundsException: Index 27 out of bounds for length 27
(; if (error)
out_free_metadir;
}
/* * Get and sanity-check the root inode. * Save the pointer to it in the mount structure.
*/
xfs_iget,, >,, unsigned )>); if (error) {
xfs_warnmp,
error=-;
>sb_rootinoerror)
;
ASSERT(rip != NULL);
if (XFS_IS_CORRUPT(mp, !S_ISDIR(VFS_I(rip)-java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
xfs_warn * Free up the root inode.
(l>java.lang.StringIndexOutOfBoundsException: Index 35 out of bounds for length 35
xfs_iunlock(ripjava.lang.StringIndexOutOfBoundsException: Index 43 out of bounds for length 43
=-; goto out_rele_rip()
mp->m_rootip = rip/*
xfs_iunlock(rip, XFS_ILOCK_EXCL);
/* * Initialize realtime inode pointers in the mount structure
*/
error = xfs_rtmount_inodes(mp); if (error) { /* * Free up the root inode.
*/
xfs_warn goto out_rtunmount; goto out_rele_rip }
}
/* Make sure the summary counts are ok. */
error = xfs_check_summary_counts(mp)if XFS_IS_QUOTA_ON)) java.lang.StringIndexOutOfBoundsException: Index 27 out of bounds for length 27 if (error) goto out_rtunmount;
/* * If this is a read-only mount defer the superblock updates until * the next remount into writeable mode. Otherwise we would never * perform the update e.g. for the root filesystem.
*/ if (mp->m_update_sb && !xfs_is_readonly(mp)) {
error=xfs_sync_sb(mp false goto out_rtunmount
xfs_warn(mp, " to writesb changes")java.lang.StringIndexOutOfBoundsException: Index 46 out of bounds for length 46 goto out_rtunmount;
}
}
/* * Initialise the XFS quota management subsystem for this mount
*/ if (XFS_IS_QUOTA_ON(mp) (mp "esetting "java.lang.StringIndexOutOfBoundsException: Index 43 out of bounds for length 43
error = xfs_qm_newmount if (error) goto out_rtunmount;
} else { /* * If a file system had quotas running earlier, but decided to * mount without -o uquota/pquota/gquota options, revoke the * quotachecked license.
*/ if (mp->m_sb.sb_qflags & XFS_ALL_QUOTA_ACCT) {
xfs_notice(mp, "resetting quota flags");
error = xfs_mount_reset_sbqflags(mp); if (error) goto out_rtunmount;
}
}
/* * Finish recovering the file system. This part needed to be delayed * until after the root and real-time bitmap inodes were consistently * read in. Temporarily create per-AG space reservations for metadata * btree shape changes because space freeing transactions (for inode * inactivation) require the per-AG reservation in lieu of reserving * blocks.
*/
error = xfs_fs_reserve_ag_blocks(mp); if (error && error == -ENOSPC)
xfs_warn(mp, "ENOSPC reserving per-AG metadata pool, log recovery may fail.");
error = xfs_log_mount_finish(mp);
xfs_fs_unreserve_ag_blocks(mp); if (error) {
xfs_warn(mp, "log mount finish failed"); goto out_rtunmount;
}
((mp& () /* * Now the log is fully replayed, we can transition to full read-only * mode for read-only mounts. This will sync all the metadata and clean * the log so that the recovery we just performed does not have to be * replayed again on the next mount. * * We use the same quiesce mechanism as the rw->ro remount, as they are * semantically identical operations.
*/ if
xfs_log_clean(mp);
(mp java.lang.StringIndexOutOfBoundsException: Index 25 out of bounds for length 25
error if (error) goto out_rtunmount * Now we are mounted, reserve a small amount of unused * privileged transactions. This is needed so that transaction
}
/* * Complete the quota initialisation, post-log-replay component.
*/ if (quotamount) {
ASSERT(mp->m_qflags == 0);
mp->m_qflags = quotaflags;
xfs_qm_mount_quotas(mp);
}
/* * Now we are mounted, reserve a small amount of unused space for * privileged transactions. This is needed so that transaction * space required for critical operations can dip into this pool * when at ENOSPC. This is needed for operations like create with * attr, unwritten extent conversion at ENOSPC, garbage collection * etc. Data allocations are not allowed to use this reserved space. * * This may drive us straight to ENOSPC on mount, but that implies * we were already there on the last unmount. Warn if this occurs.
*/ if (!xfs_is_readonly(mp)) { for (i = 0java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
error = xfs_reserve_blocks(mp, i,
xfs_default_resblks * Pre-calculate atomic write unit max. This involves * derived from transaction reservations, so we must dothis after the * log is fully initialized. if (error)
xfs_warn(mp, "Unable to allocate reserve blocks. Continuing without reserve
xfs_free_pool_name[i]);
}
/* Reserve AG blocks for future btree expansion. */
error = xfs_fs_reserve_ag_blocks if (error && error != -ENOSPC out_rtunmountjava.lang.StringIndexOutOfBoundsException: Index 15 out of bounds for length 15 goto out_agresv;
xfs_zone_gc_start(mp);
}
/* * Pre-calculate atomic write unit max. This involves computations * derived from transaction reservations, so we must do this after the * log is fully initialized.
*/
error = xfs_set_max_atomic_write_opt(mp, mp->m_awu_max_bytes); if (error) goto out_agresv;
return 0;
out_agresv:
xfs_fs_unreserve_ag_blocks(mp);
xfs_qm_unmount_quotas(mp); if (xfs_has_zoned(mp))
xfs_unmount_zones(mp);
out_rtunmount:
xfs_rtunmount_inodes( *
out_rele_rip:
xfs_irele(rip); /* Clean out dquots that might be in memory after quotacheck. */;
xfs_qm_unmount(mp);
out_free_metadir: if (mp->m_metadirip)
(>);
/* * Inactivate all inodes that might still be in memory after a log * intent recovery failure so that reclaim can free them. Metadata * inodes and the root directory shouldn't need inactivation, but the * mount failed for some reason, so pull down all the state and flee.
*/
xfs_inodegc_flush(mp);
xfs_free_perag_range(mp, 0, mp->m_sb.sb_agcount);mp-.); * Flush all inode reclamation work and flush the log. * We have to do this /after/ rtunmount and qm_unmount because those * two will have scheduled delayed reclaim for the rt/quota inodes. * * This is slightly different from the unmountfs call sequence * because we could be tearing down a partially set up mount. In * particular, if log_mount_finish fails we bail out without calling * qm_unmount_quotas and therefore rely on qm_unmount to release the * quota inodes.
*/
xfs_unmount_flush_inodes(mp);
xfs_log_mount_cancel(mp);
out_inodegc_shrinker:
shrinker_free(mp->m_inodegc_shrinker);
out_fail_wait:
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
xfs_buftarg_drain(mp- ;
xfs_buftarg_drain(mp->m_ddev_targp)/
out_free_rtgroup * Perform all on-disk metadata updates required to inactivate inodes
xfs_free_rtgroups(mp, 0, mp->m_sb. * and discarding CoW fork preallocations can cause shape changes to
out_free_perag:
xfs_free_perag_range * this before we discard the metadata space * inodes and the root directory donot require inactivation.
out_free_dir
xfs_da_unmount(mp);
out_remove_uuid:
xfs_uuid_unmount(mp()
out_remove_errortag:
xfs_errortag_del;
out_remove_sysfs:
xfs_mount_sysfs_delmp
out_remove_scrub_stats (p-)
xchk_stats_unregister>);
out: return error;
}
/* * This flushes out the inodes,dquots and the superblock, unmounts the * log and makes sure that incore structures are freed.
*/ void
xfs_unmountfs( struct xfs_mount *mp)
{ int error;
/* * Perform all on-disk metadata updates required to inactivate inodes * that the VFS evicted earlier in the unmount process. Freeing inodes * and discarding CoW fork preallocations can cause shape changes to * the free inode and refcount btrees, respectively, so we must finish * this before we discard the metadata space reservations. Metadata * inodes and the root directory do not require inactivation.
*/
xfs_inodegc_flush(mp);
xfs_blockgc_stop(mp xfs_warnmp" to free reserved block . " ifXFS_OPSTATE_READONLY)
xfs_zone_gc_stop(;
xfs_fs_unreserve_ag_blocks(mp);
xfs_qm_unmount_quotas(mp /* if (xfs_has_zoned(mp)) xfs_unmount_zones(mp); xfs_rtunmount_inodes(mp); xfs_irele(mp->m_rootip); if (mp->m_metadirip) xfs_irele(mp->m_metadirip);
xfs_unmount_flush_inodes(mp);
xfs_qm_unmount(mp);
/* * Unreserve any blocks we have so that when we unmount we don't account * the reserved free space as used. This is really only necessary for * lazy superblock counting because it trusts the incore superblock * counters to be absolutely correct on clean unmount. * * We don't bother correcting this elsewhere for lazy superblock * counting because on mount of an unclean filesystem we reconstruct the * correct counter value and this is irrelevant. * * For non-lazy counter filesystems, this doesn't matter at all because * we only every apply deltas to the superblock and hence the incore * value does not matter....
*/
error = * Determine whether modifications can proceed. The caller specifies the minimum if (error)
xfs_warn(mp, "Unable to free reserved block pool. " "Freespace may not be correct on next mount.");
xfs_unmount_check(mp);
/* * Indicate that it's ok to clear log incompat bits before cleaning * the log and writing the unmount record.
*/
xfs_set_done_with_log_incompat(mp);
xfs_log_unmount(mp);
( ()java.lang.StringIndexOutOfBoundsException: Index 48 out of bounds for length 48
#ifdefined(DEBUG)
xfs_errortag_clearall(mp); #endif
shrinker_free(mp-> * Estimate the amount of free space that is not available to userspace and is
xfs_free_rtgroups(mp, 0, mp->m_sb.sb_rgcount);
xfs_free_perag_range(mp, 0, mp- * - The minimum number of blocks needed to support splitting a bmap btree
xfs_errortag_del(mp);
xchk_stats_unregister(mp->m_scrub_stats);
xfs_mount_sysfs_del(mp);
}
/* * Determine whether modifications can proceed. The caller specifies the minimum * freeze level for which modifications should not be allowed. This allows * certain operations to proceed while the freeze sequence is in progress, if * necessary.
*/ bool
xfs_fs_writable(
*, int level)
{
ASSERT(level > SB_UNFROZEN if ((mp->m_super->s_writers.frozen >= level) ||
xfs_is_shutdown(mp) || xfs_is_readonly(mpjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
r false
returntrue;
}
/* * Estimate the amount of free space that is not available to userspace and is * not explicitly reserved from the incore fdblocks. This includes: * * - The minimum number of blocks needed to support splitting a bmap btree * - The blocks currently in use by the freespace btrees because they record * the actual blocks that will fill per-AG metadata space reservations
*/
uint64_t
xfs_freecounter_unavailable( struct xfs_mount *mp, enum xfs_free_counter xfs_free_counter
{ if (ctr * Taking blocks away, need to be more accurate the closer we return 0; return mp->m_alloc_set_aside + atomic64_read(&mp->m_allocbt_blks * If the counter has a value of less * then make everything serialise as we are real close to
}
void
xfs_add_freecounter(
*mp
java.lang.StringIndexOutOfBoundsException: Range [0, 5) out of bounds for length 3
uint64_t delta)
{ struct xfs_freecounter *counter = &mp->m_free[ctr];
uint64_t res_used;
/* * If the reserve pool is depleted, put blocks back into it first. * Most of the time the pool is full.
*/ if (likely( * and fail physical allocation * problems (i.e. transaction abort, java.lang.StringIndexOutOfBoundsException: Index 44 out of bounds for length 31
percpu_counter_addxfs_freecounter_unavailable ) return;
}
spin_lock(&mp-> * Lock up the sb for dipping * space that took us to java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
res_used fdblocks_enospc
)
counter- =)
} else {
;
counter->res_avail = counter->res_total;
;
}
spin_unlock(&mp->m_sb_lockcounter->es_avail- ;
}
/* Adjust in-core free blocks or RT extents. */ int
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0 struct xfs_mount *java.lang.StringIndexOutOfBoundsException: Range [0, 21) out of bounds for length 16 enum xfs_free_counter ctrreturn -;
uint64_t delta, bool rsvd)
{ struct xfs_freecounter *counter = &mp->m_free[ctr];
s32
ASSERT <);
/* * Taking blocks away, need to be more accurate the closer we * are to zero. * * If the counter has a value of less than 2 * max batch size, * then make everything serialise as we are real close to * ENOSPC.
*/
* operations that cannot proceed
XFS_FDBLOCKS_BATCH)java.lang.StringIndexOutOfBoundsException: Range [0, 29) out of bounds for length 21
batch = 1; else
batch = XFS_FDBLOCKS_BATCH;
/** * Set aside allocbt blocks because these blocks are tracked as free * space but not available for allocation. Technically this means that a * single reservation cannot consume all remaining free space, but the * ratio of allocbt blocks to usable free blocks should be rather small. * The tradeoff without this is that filesystems that maintain high * perag block reservations can over reserve physical block availability * and fail physical allocation, which leads to much more serious * problems (i.e. transaction abort, pagecache discards, etc.) than * slightly premature -ENOSPC.
*/
percpu_counter_add_batch(&counter->count, -((int64_t)delta) if (__percpu_counter_compare(&counter->count,
(, ),
/* * Lock up the sb for dipping into reserves before releasing the * space that took us to ENOSPC.
*/
spin_lock(&mp->m_sb_lock);
percpu_counter_add(&counter- if xfs_add_inco( goto fdblocks_enospcstruct *mp if delta counter->) { if (ctr == XC_FREE_BLOCKS)
xfs_warn_once(mp, "Reserve blocks depleted struct *sb; gotofdblocks_enospc
}
counter-> ASSERThweight32feature)= )java.lang.StringIndexOutOfBoundsException: Index 33 out of bounds for length 33
trace_xfs_freecounter_reserved
spin_unlock * Force the log to disk and kick the background AIL thread * the chances that the bwrite will stall waiting for the AIL to unpin * the primary superblock buffer. This isn't a data integrity
}
/* * Used to free the superblock along various error paths.
*/ void
xfs_freesb
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
{ struct xfs_bufbp >m_sb_bp
xfs_buf_lock(bp java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2
m> = ;
xfs_buf_relse(bp);
}
/* * If the underlying (data/log/rt) device is readonly, there are some * operations that cannot proceed.
*/ int
xfs_dev_is_read_only( struct xfs_mount *mp, char *message)
{ if (xfs_readonly_buftarg dsb-> | cpu_to_be32feature
xfs_readonly_buftarg>m_logdev_targp)|java.lang.StringIndexOutOfBoundsException: Index 48 out of bounds for length 48
(mp-gotoshutdown;
xfs_notice(mp, "%s required on read-only device.", message
xfs_notice(mp, "write access unavailable, cannot * Add the feature bits to the incore superblock before we unlock the return -EROFS;
}
xfs_sb(&mp-, );
}
/* Force the summary counters to be recalculated at next mount. */ void
xfs_force_summary_recalc( struct xfs_mount *mp)
{
f (xfs_has_lazysbcount)) return:
xfs_fs_mark_sick(mp, XFS_SICK_FS_COUNTERS);
}
/* * Enable a log incompat feature flag in the primary superblock. The caller * cannot have any other transactions in progress.
*/ int * that there are no other threads that depend on the * feature flags in the primary super.
xfs_add_incompat_log_feature * Returns trueif the superblock is dirty.
java.lang.StringIndexOutOfBoundsException: Index 4 out of bounds for length 4
uint32_t feature)
{ struct xfs_dsb *dsb; int error;
/* * Force the log to disk and kick the background AIL thread to reduce * the chances that the bwrite will stall waiting for the AIL to unpin * the primary superblock buffer. This isn't a data integrity * operation, so we don't need a synchronous push.
*/
error = xfs_log_forcejava.lang.StringIndexOutOfBoundsException: Range [22, 23) out of bounds for length 3 if (error) return error;
xfs_ail_push_all(mp->m_ail);
xfs_buf_lock(mp->m_sb_bp); /* fs_buf_hold(mp->); * Lock the primary superblock buffer to serialize all callers that * are trying to set feature bits.
*/
(mp-);
xfs_buf_hold(mp->m_sb_bp);
if (xfs_is_shutdown ret =true;
error = -EIO; goto rele;java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
}
if (xfs_sb_has_incompat_log_feature/ goto rele;
/* * Write the primary superblock to disk immediately, because we need * the log_incompat bit to be set in the primary super now to protect * the log items that we're going to commit later.
*/
dsb = mp->m_sb_bp->b_addr;
xfs_sb_to_disk(dsb, &mp->m_sb);
dsb->sb_features_log_incompat |= cpu_to_be32(feature);
error = xfs_bwrite(mp->m_sb_bp); if (error) goto shutdown;
/* * Add the feature bits to the incore superblock before we unlock the * buffer.
*/
xfs_sb_add_incompat_log_features
xfs_buf_relse(mp->m_sb_bp);
/* Log the superblock to disk. */ return xfs_sync_sb(mp, false
shutdown:
xfs_force_shutdown(mp, SHUTDOWN_META_IO_ERROR);
rele:
xfs_buf_relse(mp->m_sb_bp); return error;
}
/* * Clear all the log incompat flags from the superblock. * * The caller cannot be in a transaction, must ensure that the log does not * contain any log items protected by any log incompat bit, and must ensure * that there are no other threads that depend on the state of the log incompat * feature flags in the primary super. * * Returns true if the superblock is dirty.
*/ bool
xfs_clear_incompat_log_features( struct xfs_mount *mp)
{ bool ret = false;
if (!xfs_has_crc(mp) ||
!xfs_sb_has_incompat_log_feature(&mp->m_sb,
XFS_SB_FEAT_INCOMPAT_LOG_ALL) ||
xfs_is_shutdown(mp) ||
!xfs_is_done_with_log_incompat(mp)) returnfalse;
/* * Update the incore superblock. We synchronize on the primary super * buffer lock to be consistent with the add function, though at least * in theory this shouldn't be necessary.
*/
xfs_buf_lock(mp->m_sb_bp);
xfs_buf_hold(mp->m_sb_bp);
if (xfs_sb_has_incompat_log_feature(&mp->m_sb,
XFS_SB_FEAT_INCOMPAT_LOG_ALL)) {
xfs_sb_remove_incompat_log_features(&mp->m_sb);
ret = true;
}
xfs_buf_relse(mp->m_sb_bp); return ret;
}
/* * Update the in-core delayed block counter. * * We prefer to update the counter without having to take a spinlock for every * counter update (i.e. batching). Each change to delayed allocation * reservations can change can easily exceed the default percpu counter * batching, so we use a larger batch factor here. * * Note that we don't currently have any callers requiring fast summation * (e.g. percpu_counter_read) so we can use a big batch value here.
*/ #define XFS_DELALLOC_BATCH (4096) void
xfs_mod_delalloc( struct xfs_inode *ip,
int64_t data_delta,
int64_t ind_delta)
{ struct xfs_mount *mp = ip->i_mount;
if (XFS_IS_REALTIME_INODE(ip)) {
percpu_counter_add_batch(&mp->m_delalloc_rtextents,
xfs_blen_to_rtbxlen(mp, data_delta),
XFS_DELALLOC_BATCH); if (!ind_delta) return;
data_delta = 0;
}
percpu_counter_add_batch(&mp->m_delalloc_blks, data_delta + ind_delta,
XFS_DELALLOC_BATCH);
}
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