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[XFS] Handle inode semaphores properly for dmapi queues

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SGI-PV: 931572
SGI-Modid: xfs-linux-melb:xfs-kern:189560a

Signed-off-by: Dean Roehrich <roehrich@sgi.com>
Signed-off-by: Nathan Scott <nathans@sgi.com>
This commit is contained in:
Dean Roehrich
2005-06-22 10:20:44 +10:00
committed by Nathan Scott
parent ad89d0212e
commit e1a40fa907
2 changed files with 20 additions and 13 deletions
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10
fs/xfs/linux-2.6/xfs_lrw.c
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@@ -280,10 +280,11 @@ xfs_read(
if (DM_EVENT_ENABLED(vp->v_vfsp, ip, DM_EVENT_READ) &&
!(ioflags & IO_INVIS)) {
vrwlock_t locktype = VRWLOCK_READ;
int dmflags = FILP_DELAY_FLAG(file) | DM_SEM_FLAG_RD(ioflags);
ret = -XFS_SEND_DATA(mp, DM_EVENT_READ,
BHV_TO_VNODE(bdp), *offset, size,
FILP_DELAY_FLAG(file), &locktype);
dmflags, &locktype);
if (ret) {
xfs_iunlock(ip, XFS_IOLOCK_SHARED);
goto unlock_isem;
@@ -843,11 +844,15 @@ retry:
!(ioflags & IO_INVIS)) {
xfs_rwunlock(bdp, locktype);
if (need_isem)
up(&inode->i_sem);
error = XFS_SEND_NAMESP(xip->i_mount, DM_EVENT_NOSPACE, vp,
DM_RIGHT_NULL, vp, DM_RIGHT_NULL, NULL, NULL,
0, 0, 0); /* Delay flag intentionally unused */
if (error)
goto out_unlock_isem;
goto out_nounlocks;
if (need_isem)
down(&inode->i_sem);
xfs_rwlock(bdp, locktype);
pos = xip->i_d.di_size;
ret = 0;
@@ -962,6 +967,7 @@ retry:
out_unlock_isem:
if (need_isem)
up(&inode->i_sem);
out_nounlocks:
return -error;
}