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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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47
fs/xfs/xfs_vnodeops.c
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@@ -3846,51 +3846,10 @@ xfs_reclaim(
return 0;
}
if ((ip->i_d.di_mode & S_IFMT) == S_IFREG) {
if (ip->i_d.di_size > 0) {
/*
* Flush and invalidate any data left around that is
* a part of this file.
*
* Get the inode's i/o lock so that buffers are pushed
* out while holding the proper lock. We can't hold
* the inode lock here since flushing out buffers may
* cause us to try to get the lock in xfs_strategy().
*
* We don't have to call remapf() here, because there
* cannot be any mapped file references to this vnode
* since it is being reclaimed.
*/
xfs_ilock(ip, XFS_IOLOCK_EXCL);
vn_iowait(vp);
/*
* If we hit an IO error, we need to make sure that the
* buffer and page caches of file data for
* the file are tossed away. We don't want to use
* VOP_FLUSHINVAL_PAGES here because we don't want dirty
* pages to stay attached to the vnode, but be
* marked P_BAD. pdflush/vnode_pagebad
* hates that.
*/
if (!XFS_FORCED_SHUTDOWN(ip->i_mount)) {
VOP_FLUSHINVAL_PAGES(vp, 0, -1, FI_NONE);
} else {
VOP_TOSS_PAGES(vp, 0, -1, FI_NONE);
}
ASSERT(VN_CACHED(vp) == 0);
ASSERT(XFS_FORCED_SHUTDOWN(ip->i_mount) ||
ip->i_delayed_blks == 0);
xfs_iunlock(ip, XFS_IOLOCK_EXCL);
} else if (XFS_FORCED_SHUTDOWN(ip->i_mount)) {
/*
* di_size field may not be quite accurate if we're
* shutting down.
*/
VOP_TOSS_PAGES(vp, 0, -1, FI_NONE);
ASSERT(VN_CACHED(vp) == 0);
}
}
ASSERT(XFS_FORCED_SHUTDOWN(ip->i_mount) || ip->i_delayed_blks == 0);
ASSERT(VN_CACHED(vp) == 0);
/* If we have nothing to flush with this inode then complete the
* teardown now, otherwise break the link between the xfs inode