[XFS] Use the inode tree for finding dirty inodes
Update xfs_sync_inodes to walk the inode radix tree cache to find dirty inodes. This removes a huge bunch of nasty, messy code for traversing the mount inode list safely and removes another user of the mount inode list. Version 3 o rediff against new linux-2.6/xfs_sync.c code Version 2 o add comment explaining use of gang lookups for a single inode o use IRELE, not VN_RELE o move check for ag initialisation to caller. SGI-PV: 988139 SGI-Modid: xfs-linux-melb:xfs-kern:32290a Signed-off-by: David Chinner <david@fromorbit.com> Signed-off-by: Lachlan McIlroy <lachlan@sgi.com> Signed-off-by: Christoph Hellwig <hch@infradead.org>
This commit is contained in:
parent
2f8a3ce1c2
commit
683a897080
|
@ -121,81 +121,180 @@ xfs_sync(
|
||||||
}
|
}
|
||||||
|
|
||||||
/*
|
/*
|
||||||
* xfs sync routine for internal use
|
* Sync all the inodes in the given AG according to the
|
||||||
*
|
* direction given by the flags.
|
||||||
* This routine supports all of the flags defined for the generic vfs_sync
|
|
||||||
* interface as explained above under xfs_sync.
|
|
||||||
*
|
|
||||||
*/
|
*/
|
||||||
|
STATIC int
|
||||||
|
xfs_sync_inodes_ag(
|
||||||
|
xfs_mount_t *mp,
|
||||||
|
int ag,
|
||||||
|
int flags,
|
||||||
|
int *bypassed)
|
||||||
|
{
|
||||||
|
xfs_inode_t *ip = NULL;
|
||||||
|
struct inode *vp = NULL;
|
||||||
|
xfs_perag_t *pag = &mp->m_perag[ag];
|
||||||
|
boolean_t vnode_refed = B_FALSE;
|
||||||
|
int nr_found;
|
||||||
|
int first_index = 0;
|
||||||
|
int error = 0;
|
||||||
|
int last_error = 0;
|
||||||
|
int fflag = XFS_B_ASYNC;
|
||||||
|
int lock_flags = XFS_ILOCK_SHARED;
|
||||||
|
|
||||||
|
if (flags & SYNC_DELWRI)
|
||||||
|
fflag = XFS_B_DELWRI;
|
||||||
|
if (flags & SYNC_WAIT)
|
||||||
|
fflag = 0; /* synchronous overrides all */
|
||||||
|
|
||||||
|
if (flags & (SYNC_DELWRI | SYNC_CLOSE)) {
|
||||||
|
/*
|
||||||
|
* We need the I/O lock if we're going to call any of
|
||||||
|
* the flush/inval routines.
|
||||||
|
*/
|
||||||
|
lock_flags |= XFS_IOLOCK_SHARED;
|
||||||
|
}
|
||||||
|
|
||||||
|
do {
|
||||||
|
/*
|
||||||
|
* use a gang lookup to find the next inode in the tree
|
||||||
|
* as the tree is sparse and a gang lookup walks to find
|
||||||
|
* the number of objects requested.
|
||||||
|
*/
|
||||||
|
read_lock(&pag->pag_ici_lock);
|
||||||
|
nr_found = radix_tree_gang_lookup(&pag->pag_ici_root,
|
||||||
|
(void**)&ip, first_index, 1);
|
||||||
|
|
||||||
|
if (!nr_found) {
|
||||||
|
read_unlock(&pag->pag_ici_lock);
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
|
||||||
|
/* update the index for the next lookup */
|
||||||
|
first_index = XFS_INO_TO_AGINO(mp, ip->i_ino + 1);
|
||||||
|
|
||||||
|
/*
|
||||||
|
* skip inodes in reclaim. Let xfs_syncsub do that for
|
||||||
|
* us so we don't need to worry.
|
||||||
|
*/
|
||||||
|
vp = VFS_I(ip);
|
||||||
|
if (!vp) {
|
||||||
|
read_unlock(&pag->pag_ici_lock);
|
||||||
|
continue;
|
||||||
|
}
|
||||||
|
|
||||||
|
/* bad inodes are dealt with elsewhere */
|
||||||
|
if (VN_BAD(vp)) {
|
||||||
|
read_unlock(&pag->pag_ici_lock);
|
||||||
|
continue;
|
||||||
|
}
|
||||||
|
|
||||||
|
/* nothing to sync during shutdown */
|
||||||
|
if (XFS_FORCED_SHUTDOWN(mp) && !(flags & SYNC_CLOSE)) {
|
||||||
|
read_unlock(&pag->pag_ici_lock);
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
/*
|
||||||
|
* The inode lock here actually coordinates with the almost
|
||||||
|
* spurious inode lock in xfs_ireclaim() to prevent the vnode
|
||||||
|
* we handle here without a reference from being freed while we
|
||||||
|
* reference it. If we lock the inode while it's on the mount
|
||||||
|
* list here, then the spurious inode lock in xfs_ireclaim()
|
||||||
|
* after the inode is pulled from the mount list will sleep
|
||||||
|
* until we release it here. This keeps the vnode from being
|
||||||
|
* freed while we reference it.
|
||||||
|
*/
|
||||||
|
if (xfs_ilock_nowait(ip, lock_flags) == 0) {
|
||||||
|
vp = vn_grab(vp);
|
||||||
|
read_unlock(&pag->pag_ici_lock);
|
||||||
|
if (!vp)
|
||||||
|
continue;
|
||||||
|
xfs_ilock(ip, lock_flags);
|
||||||
|
|
||||||
|
ASSERT(vp == VFS_I(ip));
|
||||||
|
ASSERT(ip->i_mount == mp);
|
||||||
|
|
||||||
|
vnode_refed = B_TRUE;
|
||||||
|
} else {
|
||||||
|
/* safe to unlock here as we have a reference */
|
||||||
|
read_unlock(&pag->pag_ici_lock);
|
||||||
|
}
|
||||||
|
/*
|
||||||
|
* If we have to flush data or wait for I/O completion
|
||||||
|
* we need to drop the ilock that we currently hold.
|
||||||
|
* If we need to drop the lock, insert a marker if we
|
||||||
|
* have not already done so.
|
||||||
|
*/
|
||||||
|
if (flags & SYNC_CLOSE) {
|
||||||
|
xfs_iunlock(ip, XFS_ILOCK_SHARED);
|
||||||
|
if (XFS_FORCED_SHUTDOWN(mp))
|
||||||
|
xfs_tosspages(ip, 0, -1, FI_REMAPF);
|
||||||
|
else
|
||||||
|
error = xfs_flushinval_pages(ip, 0, -1,
|
||||||
|
FI_REMAPF);
|
||||||
|
/* wait for I/O on freeze */
|
||||||
|
if (flags & SYNC_IOWAIT)
|
||||||
|
vn_iowait(ip);
|
||||||
|
|
||||||
|
xfs_ilock(ip, XFS_ILOCK_SHARED);
|
||||||
|
}
|
||||||
|
|
||||||
|
if ((flags & SYNC_DELWRI) && VN_DIRTY(vp)) {
|
||||||
|
xfs_iunlock(ip, XFS_ILOCK_SHARED);
|
||||||
|
error = xfs_flush_pages(ip, 0, -1, fflag, FI_NONE);
|
||||||
|
if (flags & SYNC_IOWAIT)
|
||||||
|
vn_iowait(ip);
|
||||||
|
xfs_ilock(ip, XFS_ILOCK_SHARED);
|
||||||
|
}
|
||||||
|
|
||||||
|
if ((flags & SYNC_ATTR) && !xfs_inode_clean(ip)) {
|
||||||
|
if (flags & SYNC_WAIT) {
|
||||||
|
xfs_iflock(ip);
|
||||||
|
if (!xfs_inode_clean(ip))
|
||||||
|
error = xfs_iflush(ip, XFS_IFLUSH_SYNC);
|
||||||
|
else
|
||||||
|
xfs_ifunlock(ip);
|
||||||
|
} else if (xfs_iflock_nowait(ip)) {
|
||||||
|
if (!xfs_inode_clean(ip))
|
||||||
|
error = xfs_iflush(ip, XFS_IFLUSH_DELWRI);
|
||||||
|
else
|
||||||
|
xfs_ifunlock(ip);
|
||||||
|
} else if (bypassed) {
|
||||||
|
(*bypassed)++;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
if (lock_flags)
|
||||||
|
xfs_iunlock(ip, lock_flags);
|
||||||
|
|
||||||
|
if (vnode_refed) {
|
||||||
|
IRELE(ip);
|
||||||
|
vnode_refed = B_FALSE;
|
||||||
|
}
|
||||||
|
|
||||||
|
if (error)
|
||||||
|
last_error = error;
|
||||||
|
/*
|
||||||
|
* bail out if the filesystem is corrupted.
|
||||||
|
*/
|
||||||
|
if (error == EFSCORRUPTED)
|
||||||
|
return XFS_ERROR(error);
|
||||||
|
|
||||||
|
} while (nr_found);
|
||||||
|
|
||||||
|
return last_error;
|
||||||
|
}
|
||||||
|
|
||||||
int
|
int
|
||||||
xfs_sync_inodes(
|
xfs_sync_inodes(
|
||||||
xfs_mount_t *mp,
|
xfs_mount_t *mp,
|
||||||
int flags,
|
int flags,
|
||||||
int *bypassed)
|
int *bypassed)
|
||||||
{
|
{
|
||||||
xfs_inode_t *ip = NULL;
|
|
||||||
struct inode *vp = NULL;
|
|
||||||
int error;
|
int error;
|
||||||
int last_error;
|
int last_error;
|
||||||
uint64_t fflag;
|
int i;
|
||||||
uint lock_flags;
|
|
||||||
uint base_lock_flags;
|
|
||||||
boolean_t mount_locked;
|
|
||||||
boolean_t vnode_refed;
|
|
||||||
int preempt;
|
|
||||||
xfs_iptr_t *ipointer;
|
|
||||||
#ifdef DEBUG
|
|
||||||
boolean_t ipointer_in = B_FALSE;
|
|
||||||
|
|
||||||
#define IPOINTER_SET ipointer_in = B_TRUE
|
|
||||||
#define IPOINTER_CLR ipointer_in = B_FALSE
|
|
||||||
#else
|
|
||||||
#define IPOINTER_SET
|
|
||||||
#define IPOINTER_CLR
|
|
||||||
#endif
|
|
||||||
|
|
||||||
|
|
||||||
/* Insert a marker record into the inode list after inode ip. The list
|
|
||||||
* must be locked when this is called. After the call the list will no
|
|
||||||
* longer be locked.
|
|
||||||
*/
|
|
||||||
#define IPOINTER_INSERT(ip, mp) { \
|
|
||||||
ASSERT(ipointer_in == B_FALSE); \
|
|
||||||
ipointer->ip_mnext = ip->i_mnext; \
|
|
||||||
ipointer->ip_mprev = ip; \
|
|
||||||
ip->i_mnext = (xfs_inode_t *)ipointer; \
|
|
||||||
ipointer->ip_mnext->i_mprev = (xfs_inode_t *)ipointer; \
|
|
||||||
preempt = 0; \
|
|
||||||
XFS_MOUNT_IUNLOCK(mp); \
|
|
||||||
mount_locked = B_FALSE; \
|
|
||||||
IPOINTER_SET; \
|
|
||||||
}
|
|
||||||
|
|
||||||
/* Remove the marker from the inode list. If the marker was the only item
|
|
||||||
* in the list then there are no remaining inodes and we should zero out
|
|
||||||
* the whole list. If we are the current head of the list then move the head
|
|
||||||
* past us.
|
|
||||||
*/
|
|
||||||
#define IPOINTER_REMOVE(ip, mp) { \
|
|
||||||
ASSERT(ipointer_in == B_TRUE); \
|
|
||||||
if (ipointer->ip_mnext != (xfs_inode_t *)ipointer) { \
|
|
||||||
ip = ipointer->ip_mnext; \
|
|
||||||
ip->i_mprev = ipointer->ip_mprev; \
|
|
||||||
ipointer->ip_mprev->i_mnext = ip; \
|
|
||||||
if (mp->m_inodes == (xfs_inode_t *)ipointer) { \
|
|
||||||
mp->m_inodes = ip; \
|
|
||||||
} \
|
|
||||||
} else { \
|
|
||||||
ASSERT(mp->m_inodes == (xfs_inode_t *)ipointer); \
|
|
||||||
mp->m_inodes = NULL; \
|
|
||||||
ip = NULL; \
|
|
||||||
} \
|
|
||||||
IPOINTER_CLR; \
|
|
||||||
}
|
|
||||||
|
|
||||||
#define XFS_PREEMPT_MASK 0x7f
|
|
||||||
|
|
||||||
ASSERT(!(flags & SYNC_BDFLUSH));
|
|
||||||
|
|
||||||
if (bypassed)
|
if (bypassed)
|
||||||
*bypassed = 0;
|
*bypassed = 0;
|
||||||
|
@ -203,274 +302,16 @@ xfs_sync_inodes(
|
||||||
return 0;
|
return 0;
|
||||||
error = 0;
|
error = 0;
|
||||||
last_error = 0;
|
last_error = 0;
|
||||||
preempt = 0;
|
|
||||||
|
|
||||||
/* Allocate a reference marker */
|
for (i = 0; i < mp->m_sb.sb_agcount; i++) {
|
||||||
ipointer = (xfs_iptr_t *)kmem_zalloc(sizeof(xfs_iptr_t), KM_SLEEP);
|
if (!mp->m_perag[i].pag_ici_init)
|
||||||
|
|
||||||
fflag = XFS_B_ASYNC; /* default is don't wait */
|
|
||||||
if (flags & SYNC_DELWRI)
|
|
||||||
fflag = XFS_B_DELWRI;
|
|
||||||
if (flags & SYNC_WAIT)
|
|
||||||
fflag = 0; /* synchronous overrides all */
|
|
||||||
|
|
||||||
base_lock_flags = XFS_ILOCK_SHARED;
|
|
||||||
if (flags & (SYNC_DELWRI | SYNC_CLOSE)) {
|
|
||||||
/*
|
|
||||||
* We need the I/O lock if we're going to call any of
|
|
||||||
* the flush/inval routines.
|
|
||||||
*/
|
|
||||||
base_lock_flags |= XFS_IOLOCK_SHARED;
|
|
||||||
}
|
|
||||||
|
|
||||||
XFS_MOUNT_ILOCK(mp);
|
|
||||||
|
|
||||||
ip = mp->m_inodes;
|
|
||||||
|
|
||||||
mount_locked = B_TRUE;
|
|
||||||
vnode_refed = B_FALSE;
|
|
||||||
|
|
||||||
IPOINTER_CLR;
|
|
||||||
|
|
||||||
do {
|
|
||||||
ASSERT(ipointer_in == B_FALSE);
|
|
||||||
ASSERT(vnode_refed == B_FALSE);
|
|
||||||
|
|
||||||
lock_flags = base_lock_flags;
|
|
||||||
|
|
||||||
/*
|
|
||||||
* There were no inodes in the list, just break out
|
|
||||||
* of the loop.
|
|
||||||
*/
|
|
||||||
if (ip == NULL) {
|
|
||||||
break;
|
|
||||||
}
|
|
||||||
|
|
||||||
/*
|
|
||||||
* We found another sync thread marker - skip it
|
|
||||||
*/
|
|
||||||
if (ip->i_mount == NULL) {
|
|
||||||
ip = ip->i_mnext;
|
|
||||||
continue;
|
continue;
|
||||||
}
|
error = xfs_sync_inodes_ag(mp, i, flags, bypassed);
|
||||||
|
if (error)
|
||||||
vp = VFS_I(ip);
|
|
||||||
|
|
||||||
/*
|
|
||||||
* If the vnode is gone then this is being torn down,
|
|
||||||
* call reclaim if it is flushed, else let regular flush
|
|
||||||
* code deal with it later in the loop.
|
|
||||||
*/
|
|
||||||
|
|
||||||
if (vp == NULL) {
|
|
||||||
/* Skip ones already in reclaim */
|
|
||||||
if (ip->i_flags & XFS_IRECLAIM) {
|
|
||||||
ip = ip->i_mnext;
|
|
||||||
continue;
|
|
||||||
}
|
|
||||||
if (xfs_ilock_nowait(ip, XFS_ILOCK_EXCL) == 0) {
|
|
||||||
ip = ip->i_mnext;
|
|
||||||
} else if ((xfs_ipincount(ip) == 0) &&
|
|
||||||
xfs_iflock_nowait(ip)) {
|
|
||||||
IPOINTER_INSERT(ip, mp);
|
|
||||||
|
|
||||||
xfs_finish_reclaim(ip, 1,
|
|
||||||
XFS_IFLUSH_DELWRI_ELSE_ASYNC);
|
|
||||||
|
|
||||||
XFS_MOUNT_ILOCK(mp);
|
|
||||||
mount_locked = B_TRUE;
|
|
||||||
IPOINTER_REMOVE(ip, mp);
|
|
||||||
} else {
|
|
||||||
xfs_iunlock(ip, XFS_ILOCK_EXCL);
|
|
||||||
ip = ip->i_mnext;
|
|
||||||
}
|
|
||||||
continue;
|
|
||||||
}
|
|
||||||
|
|
||||||
if (VN_BAD(vp)) {
|
|
||||||
ip = ip->i_mnext;
|
|
||||||
continue;
|
|
||||||
}
|
|
||||||
|
|
||||||
if (XFS_FORCED_SHUTDOWN(mp) && !(flags & SYNC_CLOSE)) {
|
|
||||||
XFS_MOUNT_IUNLOCK(mp);
|
|
||||||
kmem_free(ipointer);
|
|
||||||
return 0;
|
|
||||||
}
|
|
||||||
|
|
||||||
/*
|
|
||||||
* Try to lock without sleeping. We're out of order with
|
|
||||||
* the inode list lock here, so if we fail we need to drop
|
|
||||||
* the mount lock and try again. If we're called from
|
|
||||||
* bdflush() here, then don't bother.
|
|
||||||
*
|
|
||||||
* The inode lock here actually coordinates with the
|
|
||||||
* almost spurious inode lock in xfs_ireclaim() to prevent
|
|
||||||
* the vnode we handle here without a reference from
|
|
||||||
* being freed while we reference it. If we lock the inode
|
|
||||||
* while it's on the mount list here, then the spurious inode
|
|
||||||
* lock in xfs_ireclaim() after the inode is pulled from
|
|
||||||
* the mount list will sleep until we release it here.
|
|
||||||
* This keeps the vnode from being freed while we reference
|
|
||||||
* it.
|
|
||||||
*/
|
|
||||||
if (xfs_ilock_nowait(ip, lock_flags) == 0) {
|
|
||||||
if (vp == NULL) {
|
|
||||||
ip = ip->i_mnext;
|
|
||||||
continue;
|
|
||||||
}
|
|
||||||
|
|
||||||
vp = vn_grab(vp);
|
|
||||||
if (vp == NULL) {
|
|
||||||
ip = ip->i_mnext;
|
|
||||||
continue;
|
|
||||||
}
|
|
||||||
|
|
||||||
IPOINTER_INSERT(ip, mp);
|
|
||||||
xfs_ilock(ip, lock_flags);
|
|
||||||
|
|
||||||
ASSERT(vp == VFS_I(ip));
|
|
||||||
ASSERT(ip->i_mount == mp);
|
|
||||||
|
|
||||||
vnode_refed = B_TRUE;
|
|
||||||
}
|
|
||||||
|
|
||||||
/* From here on in the loop we may have a marker record
|
|
||||||
* in the inode list.
|
|
||||||
*/
|
|
||||||
|
|
||||||
/*
|
|
||||||
* If we have to flush data or wait for I/O completion
|
|
||||||
* we need to drop the ilock that we currently hold.
|
|
||||||
* If we need to drop the lock, insert a marker if we
|
|
||||||
* have not already done so.
|
|
||||||
*/
|
|
||||||
if ((flags & (SYNC_CLOSE|SYNC_IOWAIT)) ||
|
|
||||||
((flags & SYNC_DELWRI) && VN_DIRTY(vp))) {
|
|
||||||
if (mount_locked) {
|
|
||||||
IPOINTER_INSERT(ip, mp);
|
|
||||||
}
|
|
||||||
xfs_iunlock(ip, XFS_ILOCK_SHARED);
|
|
||||||
|
|
||||||
if (flags & SYNC_CLOSE) {
|
|
||||||
/* Shutdown case. Flush and invalidate. */
|
|
||||||
if (XFS_FORCED_SHUTDOWN(mp))
|
|
||||||
xfs_tosspages(ip, 0, -1,
|
|
||||||
FI_REMAPF);
|
|
||||||
else
|
|
||||||
error = xfs_flushinval_pages(ip,
|
|
||||||
0, -1, FI_REMAPF);
|
|
||||||
} else if ((flags & SYNC_DELWRI) && VN_DIRTY(vp)) {
|
|
||||||
error = xfs_flush_pages(ip, 0,
|
|
||||||
-1, fflag, FI_NONE);
|
|
||||||
}
|
|
||||||
|
|
||||||
/*
|
|
||||||
* When freezing, we need to wait ensure all I/O (including direct
|
|
||||||
* I/O) is complete to ensure no further data modification can take
|
|
||||||
* place after this point
|
|
||||||
*/
|
|
||||||
if (flags & SYNC_IOWAIT)
|
|
||||||
vn_iowait(ip);
|
|
||||||
|
|
||||||
xfs_ilock(ip, XFS_ILOCK_SHARED);
|
|
||||||
}
|
|
||||||
|
|
||||||
if ((flags & SYNC_ATTR) &&
|
|
||||||
(ip->i_update_core ||
|
|
||||||
(ip->i_itemp && ip->i_itemp->ili_format.ilf_fields))) {
|
|
||||||
if (mount_locked)
|
|
||||||
IPOINTER_INSERT(ip, mp);
|
|
||||||
|
|
||||||
if (flags & SYNC_WAIT) {
|
|
||||||
xfs_iflock(ip);
|
|
||||||
error = xfs_iflush(ip, XFS_IFLUSH_SYNC);
|
|
||||||
|
|
||||||
/*
|
|
||||||
* If we can't acquire the flush lock, then the inode
|
|
||||||
* is already being flushed so don't bother waiting.
|
|
||||||
*
|
|
||||||
* If we can lock it then do a delwri flush so we can
|
|
||||||
* combine multiple inode flushes in each disk write.
|
|
||||||
*/
|
|
||||||
} else if (xfs_iflock_nowait(ip)) {
|
|
||||||
error = xfs_iflush(ip, XFS_IFLUSH_DELWRI);
|
|
||||||
} else if (bypassed) {
|
|
||||||
(*bypassed)++;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
if (lock_flags != 0) {
|
|
||||||
xfs_iunlock(ip, lock_flags);
|
|
||||||
}
|
|
||||||
|
|
||||||
if (vnode_refed) {
|
|
||||||
/*
|
|
||||||
* If we had to take a reference on the vnode
|
|
||||||
* above, then wait until after we've unlocked
|
|
||||||
* the inode to release the reference. This is
|
|
||||||
* because we can be already holding the inode
|
|
||||||
* lock when IRELE() calls xfs_inactive().
|
|
||||||
*
|
|
||||||
* Make sure to drop the mount lock before calling
|
|
||||||
* IRELE() so that we don't trip over ourselves if
|
|
||||||
* we have to go for the mount lock again in the
|
|
||||||
* inactive code.
|
|
||||||
*/
|
|
||||||
if (mount_locked) {
|
|
||||||
IPOINTER_INSERT(ip, mp);
|
|
||||||
}
|
|
||||||
|
|
||||||
IRELE(ip);
|
|
||||||
|
|
||||||
vnode_refed = B_FALSE;
|
|
||||||
}
|
|
||||||
|
|
||||||
if (error) {
|
|
||||||
last_error = error;
|
last_error = error;
|
||||||
}
|
if (error == EFSCORRUPTED)
|
||||||
|
break;
|
||||||
/*
|
}
|
||||||
* bail out if the filesystem is corrupted.
|
|
||||||
*/
|
|
||||||
if (error == EFSCORRUPTED) {
|
|
||||||
if (!mount_locked) {
|
|
||||||
XFS_MOUNT_ILOCK(mp);
|
|
||||||
IPOINTER_REMOVE(ip, mp);
|
|
||||||
}
|
|
||||||
XFS_MOUNT_IUNLOCK(mp);
|
|
||||||
ASSERT(ipointer_in == B_FALSE);
|
|
||||||
kmem_free(ipointer);
|
|
||||||
return XFS_ERROR(error);
|
|
||||||
}
|
|
||||||
|
|
||||||
/* Let other threads have a chance at the mount lock
|
|
||||||
* if we have looped many times without dropping the
|
|
||||||
* lock.
|
|
||||||
*/
|
|
||||||
if ((++preempt & XFS_PREEMPT_MASK) == 0) {
|
|
||||||
if (mount_locked) {
|
|
||||||
IPOINTER_INSERT(ip, mp);
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
if (mount_locked == B_FALSE) {
|
|
||||||
XFS_MOUNT_ILOCK(mp);
|
|
||||||
mount_locked = B_TRUE;
|
|
||||||
IPOINTER_REMOVE(ip, mp);
|
|
||||||
continue;
|
|
||||||
}
|
|
||||||
|
|
||||||
ASSERT(ipointer_in == B_FALSE);
|
|
||||||
ip = ip->i_mnext;
|
|
||||||
|
|
||||||
} while (ip != mp->m_inodes);
|
|
||||||
|
|
||||||
XFS_MOUNT_IUNLOCK(mp);
|
|
||||||
|
|
||||||
ASSERT(ipointer_in == B_FALSE);
|
|
||||||
|
|
||||||
kmem_free(ipointer);
|
|
||||||
return XFS_ERROR(last_error);
|
return XFS_ERROR(last_error);
|
||||||
}
|
}
|
||||||
|
|
||||||
|
|
Loading…
Reference in New Issue