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Commit 4f317369 authored by Christoph Hellwig's avatar Christoph Hellwig Committed by Ben Myers
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xfs: take the ilock around xfs_bmapi_read in xfs_zero_remaining_bytes 



Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
Reviewed-by: default avatarDave Chinner <dchinner@redhat.com>
Signed-off-by: default avatarBen Myers <bpm@sgi.com>
parent 40194ecc

fs/xfs/xfs_bmap_util.c

+6 −0
Original line number Diff line number Diff line
@@ -1173,9 +1173,15 @@ xfs_zero_remaining_bytes( 
	xfs_buf_unlock(bp);



	for (offset = startoff; offset <= endoff; offset = lastoffset + 1) {

		uint lock_mode;



		offset_fsb = XFS_B_TO_FSBT(mp, offset);

		nimap = 1;



		lock_mode = xfs_ilock_data_map_shared(ip);

		error = xfs_bmapi_read(ip, offset_fsb, 1, &imap, &nimap, 0);

		xfs_iunlock(ip, lock_mode);



		if (error || nimap < 1)

			break;

		ASSERT(imap.br_blockcount >= 1);