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[XFS] Fix a bug in xfs_iomap for extent handling of write cases

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This may be the cause of several open PV's of incorrect
delay flags being set and then tripping asserts.
Do not return a delay alloc extent when the caller is asking to do a write.

SGI Modid: xfs-linux:xfs-kern:189616a

Signed-off-by: Russell Cattelan <cattelan@sgi.com>
Signed-off-by: Christoph Hellwig <hch@sgi.com>
This commit is contained in:
Russell Cattelan 2005-05-06 06:42:22 -07:00 committed by Christoph Hellwig
parent 2512809255
commit 68d1498c3a
1 changed files with 3 additions and 1 deletions
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4
fs/xfs/xfs_iomap.c
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@ -278,7 +278,9 @@ xfs_iomap(
switch (flags & (BMAPI_WRITE|BMAPI_ALLOCATE|BMAPI_UNWRITTEN)) {
case BMAPI_WRITE:
/* If we found an extent, return it */
if (nimaps && (imap.br_startblock != HOLESTARTBLOCK)) {
if (nimaps &&
(imap.br_startblock != HOLESTARTBLOCK) &&
(imap.br_startblock != DELAYSTARTBLOCK)) {
xfs_iomap_map_trace(XFS_IOMAP_WRITE_MAP, io,
offset, count, iomapp, &imap, flags);
break;