From: Christoph Hellwig <hch@xxxxxxxxxxxxx>
xfs_zero_remaining_bytes() open codes a log of buffer manupulations
to do a read forllowed by a write. It can simply be replaced by an
uncached read followed by a xfs_bwrite() call.
[Christoph, can I get your sign-off for this?]
Signed-off-by: Dave Chinner <david@xxxxxxxxxxxxx>
---
fs/xfs/xfs_bmap_util.c | 44 ++++++++++++++------------------------------
1 file changed, 14 insertions(+), 30 deletions(-)
diff --git a/fs/xfs/xfs_bmap_util.c b/fs/xfs/xfs_bmap_util.c
index 41d9488..c2aaa58 100644
--- a/fs/xfs/xfs_bmap_util.c
+++ b/fs/xfs/xfs_bmap_util.c
@@ -1122,14 +1122,6 @@ xfs_zero_remaining_bytes(
if (endoff > XFS_ISIZE(ip))
endoff = XFS_ISIZE(ip);
- bp = xfs_buf_get_uncached(XFS_IS_REALTIME_INODE(ip) ?
- mp->m_rtdev_targp : mp->m_ddev_targp,
- BTOBB(mp->m_sb.sb_blocksize), 0);
- if (!bp)
- return -ENOMEM;
-
- xfs_buf_unlock(bp);
-
for (offset = startoff; offset <= endoff; offset = lastoffset + 1) {
uint lock_mode;
@@ -1152,32 +1144,24 @@ xfs_zero_remaining_bytes(
ASSERT(imap.br_startblock != DELAYSTARTBLOCK);
if (imap.br_state == XFS_EXT_UNWRITTEN)
continue;
- XFS_BUF_UNDONE(bp);
- XFS_BUF_UNWRITE(bp);
- XFS_BUF_READ(bp);
- XFS_BUF_SET_ADDR(bp, xfs_fsb_to_db(ip, imap.br_startblock));
- error = xfs_buf_submit_wait(bp);
- if (error) {
- xfs_buf_ioerror_alert(bp,
- "xfs_zero_remaining_bytes(read)");
- break;
- }
+ error = xfs_buf_read_uncached(XFS_IS_REALTIME_INODE(ip) ?
+ mp->m_rtdev_targp : mp->m_ddev_targp,
+ xfs_fsb_to_db(ip, imap.br_startblock),
+ BTOBB(mp->m_sb.sb_blocksize),
+ 0, &bp, NULL);
+ if (error)
+ return error;
+
memset(bp->b_addr +
- (offset - XFS_FSB_TO_B(mp, imap.br_startoff)),
- 0, lastoffset - offset + 1);
- XFS_BUF_UNDONE(bp);
- XFS_BUF_UNREAD(bp);
- XFS_BUF_WRITE(bp);
+ (offset - XFS_FSB_TO_B(mp, imap.br_startoff)),
+ 0, lastoffset - offset + 1);
- error = xfs_buf_submit_wait(bp);
- if (error) {
- xfs_buf_ioerror_alert(bp,
- "xfs_zero_remaining_bytes(write)");
- break;
- }
+ error = xfs_bwrite(bp);
+ xfs_buf_relse(bp);
+ if (error)
+ return error;
}
- xfs_buf_free(bp);
return error;
}
--
2.0.0
_______________________________________________
xfs mailing list
xfs@xxxxxxxxxxx
http://oss.sgi.com/mailman/listinfo/xfs
