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[XFS] hole not shown when file is created with resvsp 

SGI-PV: 967674
SGI-Modid: xfs-linux-melb:xfs-kern:29211a

Signed-off-by: Vlad Apostolov <vapo@sgi.com>
Signed-off-by: David Chinner <dgc@sgi.com>
Signed-off-by: Tim Shimmin <tes@sgi.com>
This commit is contained in:
Vlad Apostolov 2007-08-16 15:20:25 +10:00 committed by Tim Shimmin
parent 0bfefc46dc
commit 3bacbcd883
1 changed files with 40 additions and 10 deletions
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50
fs/xfs/xfs_bmap.c
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@ -5742,6 +5742,39 @@ error0:
return error;
}
/*
* returns 1 for success, 0 if we failed to map the extent.
*/
STATIC int
xfs_getbmapx_fix_eof_hole(
xfs_inode_t *ip, /* xfs incore inode pointer */
struct getbmap *out, /* output structure */
int prealloced, /* this is a file with
* preallocated data space */
__int64_t end, /* last block requested */
xfs_fsblock_t startblock)
{
__int64_t fixlen;
xfs_mount_t *mp; /* file system mount point */
if (startblock == HOLESTARTBLOCK) {
mp = ip->i_mount;
out->bmv_block = -1;
fixlen = XFS_FSB_TO_BB(mp, XFS_B_TO_FSB(mp, ip->i_size));
fixlen -= out->bmv_offset;
if (prealloced && out->bmv_offset + out->bmv_length == end) {
/* Came to hole at EOF. Trim it. */
if (fixlen <= 0)
return 0;
out->bmv_length = fixlen;
}
} else {
out->bmv_block = XFS_FSB_TO_DB(ip, startblock);
}
return 1;
}
/*
* Fcntl interface to xfs_bmapi.
*/
@ -5904,18 +5937,15 @@ xfs_getbmap(
out.bmv_length = XFS_FSB_TO_BB(mp, map[i].br_blockcount);
ASSERT(map[i].br_startblock != DELAYSTARTBLOCK);
if (map[i].br_startblock == HOLESTARTBLOCK &&
((prealloced && out.bmv_offset + out.bmv_length == bmvend) ||
whichfork == XFS_ATTR_FORK )) {
/*
* came to hole at end of file or the end of
attribute fork
*/
whichfork == XFS_ATTR_FORK) {
/* came to the end of attribute fork */
goto unlock_and_return;
} else {
out.bmv_block =
(map[i].br_startblock == HOLESTARTBLOCK) ?
-1 :
XFS_FSB_TO_DB(ip, map[i].br_startblock);
if (!xfs_getbmapx_fix_eof_hole(ip, &out,
prealloced, bmvend,
map[i].br_startblock)) {
goto unlock_and_return;
}
/* return either getbmap/getbmapx structure. */
if (interface & BMV_IF_EXTENDED) {