From: Dave Chinner <dchinner@xxxxxxxxxx>
- optimise the calcuation for the number of blocks in a remote
xattr.
- check attribute length against MAX_XATTR_SIZE, not MAXPATHLEN
- whitespace fixes
Reviewed-by: Dave Chinner <dchinner@xxxxxxxxxx>
---
fs/xfs/xfs_attr_remote.c | 19 +++++--------------
1 file changed, 5 insertions(+), 14 deletions(-)
diff --git a/fs/xfs/xfs_attr_remote.c b/fs/xfs/xfs_attr_remote.c
index 53da46b..dee8446 100644
--- a/fs/xfs/xfs_attr_remote.c
+++ b/fs/xfs/xfs_attr_remote.c
@@ -52,15 +52,9 @@ xfs_attr3_rmt_blocks(
struct xfs_mount *mp,
int attrlen)
{
- int fsblocks = 0;
- int len = attrlen;
-
- do {
- fsblocks++;
- len -= XFS_ATTR3_RMT_BUF_SPACE(mp, mp->m_sb.sb_blocksize);
- } while (len > 0);
-
- return fsblocks;
+ int buflen = XFS_ATTR3_RMT_BUF_SPACE(mp,
+ mp->m_sb.sb_blocksize);
+ return (attrlen + buflen - 1) / buflen;
}
static bool
@@ -79,7 +73,7 @@ xfs_attr3_rmt_verify(
if (bp->b_bn != be64_to_cpu(rmt->rm_blkno))
return false;
if (be32_to_cpu(rmt->rm_offset) +
- be32_to_cpu(rmt->rm_bytes) >= MAXPATHLEN)
+ be32_to_cpu(rmt->rm_bytes) >= XATTR_SIZE_MAX)
return false;
if (rmt->rm_owner == 0)
return false;
@@ -183,7 +177,6 @@ xfs_attr3_rmt_hdr_ok(
/* ok */
return true;
-
}
/*
@@ -367,7 +360,6 @@ xfs_attr_rmtval_set(
* spill for another block every 9 headers we require in this
* loop.
*/
-
if (crcs && blkcnt == 0) {
int total_len;
@@ -422,9 +414,8 @@ xfs_attr_rmtval_set(
byte_cnt = BBTOB(bp->b_length);
byte_cnt = XFS_ATTR3_RMT_BUF_SPACE(mp, byte_cnt);
- if (valuelen < byte_cnt) {
+ if (valuelen < byte_cnt)
byte_cnt = valuelen;
- }
buf = bp->b_addr;
buf += xfs_attr3_rmt_hdr_set(mp, dp->i_ino, offset,
--
1.7.10.4
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