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[XFS] add infrastructure for waiting on I/O completion at inode reclaim

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SGI-PV: 934766
SGI-Modid: xfs-linux:xfs-kern:196854a

Signed-off-by: Christoph Hellwig <hch@sgi.com>
Signed-off-by: Nathan Scott <nathans@sgi.com>
This commit is contained in:
Christoph Hellwig
2005-09-02 16:58:38 +10:00
committed by Nathan Scott
parent 592cb26bda
commit 51c91ed52b
4 changed files with 32 additions and 58 deletions
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11
fs/xfs/linux-2.6/xfs_aops.c
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@@ -139,7 +139,7 @@ linvfs_unwritten_convert(
XFS_BUF_SET_FSPRIVATE(bp, NULL);
XFS_BUF_CLR_IODONE_FUNC(bp);
XFS_BUF_UNDATAIO(bp);
iput(LINVFS_GET_IP(vp));
vn_iowake(vp);
pagebuf_iodone(bp, 0, 0);
}
@@ -448,14 +448,7 @@ xfs_map_unwritten(
if (!pb)
return -EAGAIN;
/* Take a reference to the inode to prevent it from
* being reclaimed while we have outstanding unwritten
* extent IO on it.
*/
if ((igrab(inode)) != inode) {
pagebuf_free(pb);
return -EAGAIN;
}
atomic_inc(&LINVFS_GET_VP(inode)->v_iocount);
/* Set the count to 1 initially, this will stop an I/O
* completion callout which happens before we have started