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Merge branch 'for-linus' of git://oss.sgi.com/xfs/xfs

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* 'for-linus' of git://oss.sgi.com/xfs/xfs:
  xfs: only issues a cache flush on unmount if barriers are enabled
  xfs: prevent lockdep false positive in xfs_iget_cache_miss
  xfs: prevent kernel crash due to corrupted inode log format
This commit is contained in:
Linus Torvalds 2009-03-11 14:29:03 -07:00
commit 0789d8fccb
5 changed files with 39 additions and 17 deletions
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12
fs/xfs/linux-2.6/xfs_buf.c
View File

@ -34,6 +34,12 @@
#include <linux/backing-dev.h>
#include <linux/freezer.h>
#include "xfs_sb.h"
#include "xfs_inum.h"
#include "xfs_ag.h"
#include "xfs_dmapi.h"
#include "xfs_mount.h"
static kmem_zone_t *xfs_buf_zone;
STATIC int xfsbufd(void *);
STATIC int xfsbufd_wakeup(int, gfp_t);
@ -1435,10 +1441,12 @@ xfs_unregister_buftarg(
void
xfs_free_buftarg(
xfs_buftarg_t *btp)
struct xfs_mount *mp,
struct xfs_buftarg *btp)
{
xfs_flush_buftarg(btp, 1);
xfs_blkdev_issue_flush(btp);
if (mp->m_flags & XFS_MOUNT_BARRIER)
xfs_blkdev_issue_flush(btp);
xfs_free_bufhash(btp);
iput(btp->bt_mapping->host);

2
fs/xfs/linux-2.6/xfs_buf.h
View File

@ -413,7 +413,7 @@ static inline int XFS_bwrite(xfs_buf_t *bp)
* Handling of buftargs.
*/
extern xfs_buftarg_t *xfs_alloc_buftarg(struct block_device *, int);
extern void xfs_free_buftarg(xfs_buftarg_t *);
extern void xfs_free_buftarg(struct xfs_mount *, struct xfs_buftarg *);
extern void xfs_wait_buftarg(xfs_buftarg_t *);
extern int xfs_setsize_buftarg(xfs_buftarg_t *, unsigned int, unsigned int);
extern int xfs_flush_buftarg(xfs_buftarg_t *, int);

10
fs/xfs/linux-2.6/xfs_super.c
View File

@ -734,15 +734,15 @@ xfs_close_devices(
{
if (mp->m_logdev_targp && mp->m_logdev_targp != mp->m_ddev_targp) {
struct block_device *logdev = mp->m_logdev_targp->bt_bdev;
xfs_free_buftarg(mp->m_logdev_targp);
xfs_free_buftarg(mp, mp->m_logdev_targp);
xfs_blkdev_put(logdev);
}
if (mp->m_rtdev_targp) {
struct block_device *rtdev = mp->m_rtdev_targp->bt_bdev;
xfs_free_buftarg(mp->m_rtdev_targp);
xfs_free_buftarg(mp, mp->m_rtdev_targp);
xfs_blkdev_put(rtdev);
}
xfs_free_buftarg(mp->m_ddev_targp);
xfs_free_buftarg(mp, mp->m_ddev_targp);
}
/*
@ -811,9 +811,9 @@ xfs_open_devices(
out_free_rtdev_targ:
if (mp->m_rtdev_targp)
xfs_free_buftarg(mp->m_rtdev_targp);
xfs_free_buftarg(mp, mp->m_rtdev_targp);
out_free_ddev_targ:
xfs_free_buftarg(mp->m_ddev_targp);
xfs_free_buftarg(mp, mp->m_ddev_targp);
out_close_rtdev:
if (rtdev)
xfs_blkdev_put(rtdev);

15
fs/xfs/xfs_iget.c
View File

@ -246,9 +246,6 @@ xfs_iget_cache_miss(
goto out_destroy;
}
if (lock_flags)
xfs_ilock(ip, lock_flags);
/*
* Preload the radix tree so we can insert safely under the
* write spinlock. Note that we cannot sleep inside the preload
@ -256,7 +253,16 @@ xfs_iget_cache_miss(
*/
if (radix_tree_preload(GFP_KERNEL)) {
error = EAGAIN;
goto out_unlock;
goto out_destroy;
}
/*
* Because the inode hasn't been added to the radix-tree yet it can't
* be found by another thread, so we can do the non-sleeping lock here.
*/
if (lock_flags) {
if (!xfs_ilock_nowait(ip, lock_flags))
BUG();
}
mask = ~(((XFS_INODE_CLUSTER_SIZE(mp) >> mp->m_sb.sb_inodelog)) - 1);
@ -284,7 +290,6 @@ xfs_iget_cache_miss(
out_preload_end:
write_unlock(&pag->pag_ici_lock);
radix_tree_preload_end();
out_unlock:
if (lock_flags)
xfs_iunlock(ip, lock_flags);
out_destroy:

17
fs/xfs/xfs_log_recover.c
View File

@ -1455,10 +1455,19 @@ xlog_recover_add_to_trans(
item = item->ri_prev;
if (item->ri_total == 0) { /* first region to be added */
item->ri_total = in_f->ilf_size;
ASSERT(item->ri_total <= XLOG_MAX_REGIONS_IN_ITEM);
item->ri_buf = kmem_zalloc((item->ri_total *
sizeof(xfs_log_iovec_t)), KM_SLEEP);
if (in_f->ilf_size == 0 ||
in_f->ilf_size > XLOG_MAX_REGIONS_IN_ITEM) {
xlog_warn(
"XFS: bad number of regions (%d) in inode log format",
in_f->ilf_size);
ASSERT(0);
return XFS_ERROR(EIO);
}
item->ri_total = in_f->ilf_size;
item->ri_buf =
kmem_zalloc(item->ri_total * sizeof(xfs_log_iovec_t),
KM_SLEEP);
}
ASSERT(item->ri_total > item->ri_cnt);
/* Description region is ri_buf[0] */