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ocfs2: return non-zero st_blocks for inline data

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Some versions of tar assume that files with st_blocks == 0 do not
contain any data and will skip reading them entirely.  See also commit
9206c56155 ("ext4: return non-zero st_blocks for inline data").

Signed-off-by: John Haxby <john.haxby@oracle.com>
Reviewed-by: Mark Fasheh <mfasheh@suse.de>
Cc: Joel Becker <jlbec@evilplan.org>
Acked-by: Gang He <ghe@suse.com>
Reviewed-by: Junxiao Bi <junxiao.bi@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
John Haxby
2016-01-14 15:17:12 -08:00
committed by Linus Torvalds
parent 3eb5bdf0f4
commit d6364627ef
1 changed files with 8 additions and 0 deletions
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8
fs/ocfs2/file.c
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@@ -1302,6 +1302,14 @@ int ocfs2_getattr(struct vfsmount *mnt,
} }
generic_fillattr(inode, stat); generic_fillattr(inode, stat);
/*
* If there is inline data in the inode, the inode will normally not
* have data blocks allocated (it may have an external xattr block).
* Report at least one sector for such files, so tools like tar, rsync,
* others don't incorrectly think the file is completely sparse.
*/
if (unlikely(OCFS2_I(inode)->ip_dyn_features & OCFS2_INLINE_DATA_FL))
stat->blocks += (stat->size + 511)>>9;
/* We set the blksize from the cluster size for performance */ /* We set the blksize from the cluster size for performance */
stat->blksize = osb->s_clustersize; stat->blksize = osb->s_clustersize;