AcoSail/kernel_optimize_test
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Merge branch '2.6.36-xfs-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/dgc/xfsdev

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This commit is contained in:
Alex Elder 2010-09-03 09:02:32 -05:00
commit cb7a93412a
3 changed files with 11 additions and 11 deletions
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8
fs/xfs/linux-2.6/xfs_buf.c
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@ -440,12 +440,7 @@ _xfs_buf_find(
ASSERT(btp == bp->b_target);
if (bp->b_file_offset == range_base &&
bp->b_buffer_length == range_length) {
/*
* If we look at something, bring it to the
* front of the list for next time.
*/
atomic_inc(&bp->b_hold);
list_move(&bp->b_hash_list, &hash->bh_list);
goto found;
}
}
@ -1443,8 +1438,7 @@ xfs_alloc_bufhash(
{
unsigned int i;
btp->bt_hashshift = external ? 3 : 8; /* 8 or 256 buckets */
btp->bt_hashmask = (1 << btp->bt_hashshift) - 1;
btp->bt_hashshift = external ? 3 : 12; /* 8 or 4096 buckets */
btp->bt_hash = kmem_zalloc_large((1 << btp->bt_hashshift) *
sizeof(xfs_bufhash_t));
for (i = 0; i < (1 << btp->bt_hashshift); i++) {

1
fs/xfs/linux-2.6/xfs_buf.h
View File

@ -137,7 +137,6 @@ typedef struct xfs_buftarg {
size_t bt_smask;
/* per device buffer hash table */
uint bt_hashmask;
uint bt_hashshift;
xfs_bufhash_t *bt_hash;

13
fs/xfs/xfs_vnodeops.c
View File

@ -2299,15 +2299,22 @@ xfs_alloc_file_space(
e = allocatesize_fsb;
}
/*
* The transaction reservation is limited to a 32-bit block
* count, hence we need to limit the number of blocks we are
* trying to reserve to avoid an overflow. We can't allocate
* more than @nimaps extents, and an extent is limited on disk
* to MAXEXTLEN (21 bits), so use that to enforce the limit.
*/
resblks = min_t(xfs_fileoff_t, (e - s), (MAXEXTLEN * nimaps));
if (unlikely(rt)) {
resrtextents = qblocks = (uint)(e - s);
resrtextents = qblocks = resblks;
resrtextents /= mp->m_sb.sb_rextsize;
resblks = XFS_DIOSTRAT_SPACE_RES(mp, 0);
quota_flag = XFS_QMOPT_RES_RTBLKS;
} else {
resrtextents = 0;
resblks = qblocks = \
XFS_DIOSTRAT_SPACE_RES(mp, (uint)(e - s));
resblks = qblocks = XFS_DIOSTRAT_SPACE_RES(mp, resblks);
quota_flag = XFS_QMOPT_RES_REGBLKS;
}