ocfs2: fix wrong check in ocfs2_direct_IO_get_blocks
contig_blocks gotten from ocfs2_extent_map_get_blocks cannot be compared
with clusters_to_alloc. So convert it to clusters first.
Signed-off-by: Joseph Qi <joseph.qi@huawei.com>
Reviewed-by: Weiwei Wang <wangww631@huawei.com>
Cc: Mark Fasheh <mfasheh@suse.com>
Cc: Joel Becker <jlbec@evilplan.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/fs/ocfs2/aops.c b/fs/ocfs2/aops.c
index be9905e..1a35c61 100644
--- a/fs/ocfs2/aops.c
+++ b/fs/ocfs2/aops.c
@@ -523,7 +523,7 @@
unsigned char blocksize_bits = inode->i_sb->s_blocksize_bits;
unsigned long max_blocks = bh_result->b_size >> inode->i_blkbits;
unsigned long len = bh_result->b_size;
- unsigned int clusters_to_alloc = 0;
+ unsigned int clusters_to_alloc = 0, contig_clusters = 0;
cpos = ocfs2_blocks_to_clusters(inode->i_sb, iblock);
@@ -560,8 +560,10 @@
/* fill hole, allocate blocks can't be larger than the size
* of the hole */
clusters_to_alloc = ocfs2_clusters_for_bytes(inode->i_sb, len);
- if (clusters_to_alloc > contig_blocks)
- clusters_to_alloc = contig_blocks;
+ contig_clusters = ocfs2_clusters_for_blocks(inode->i_sb,
+ contig_blocks);
+ if (clusters_to_alloc > contig_clusters)
+ clusters_to_alloc = contig_clusters;
/* allocate extent and insert them into the extent tree */
ret = ocfs2_extend_allocation(inode, cpos,