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authorBob Peterson <rpeterso@redhat.com>2010-06-24 19:21:20 -0400
committerSteven Whitehouse <swhiteho@redhat.com>2010-07-29 09:36:56 +0100
commit461cb419f074aab16836a660efb8e855b6c1609c (patch)
tree0b4ca5ab5c01efc37505a43ad96dbc94ae2bb95b /fs/gfs2/bmap.c
parentba6e93645f039bd357e04b7b9d18f4e67757725e (diff)
downloadlinux-461cb419f074aab16836a660efb8e855b6c1609c.tar.bz2
GFS2: Simplify gfs2_write_alloc_required
Function gfs2_write_alloc_required always returned zero as its return code. Therefore, it doesn't need to return a return code at all. Given that, we can use the return value to return whether or not the dinode needs block allocations rather than passing that value in, which in turn simplifies a bunch of error checking. Signed-off-by: Bob Peterson <rpeterso@redhat.com> Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Diffstat (limited to 'fs/gfs2/bmap.c')
-rw-r--r--fs/gfs2/bmap.c15
1 files changed, 5 insertions, 10 deletions
diff --git a/fs/gfs2/bmap.c b/fs/gfs2/bmap.c
index 84da64b551b2..744c29e2dcf4 100644
--- a/fs/gfs2/bmap.c
+++ b/fs/gfs2/bmap.c
@@ -1244,13 +1244,12 @@ int gfs2_file_dealloc(struct gfs2_inode *ip)
* @ip: the file being written to
* @offset: the offset to write to
* @len: the number of bytes being written
- * @alloc_required: set to 1 if an alloc is required, 0 otherwise
*
- * Returns: errno
+ * Returns: 1 if an alloc is required, 0 otherwise
*/
int gfs2_write_alloc_required(struct gfs2_inode *ip, u64 offset,
- unsigned int len, int *alloc_required)
+ unsigned int len)
{
struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
struct buffer_head bh;
@@ -1258,26 +1257,23 @@ int gfs2_write_alloc_required(struct gfs2_inode *ip, u64 offset,
u64 lblock, lblock_stop, size;
u64 end_of_file;
- *alloc_required = 0;
-
if (!len)
return 0;
if (gfs2_is_stuffed(ip)) {
if (offset + len >
sdp->sd_sb.sb_bsize - sizeof(struct gfs2_dinode))
- *alloc_required = 1;
+ return 1;
return 0;
}
- *alloc_required = 1;
shift = sdp->sd_sb.sb_bsize_shift;
BUG_ON(gfs2_is_dir(ip));
end_of_file = (ip->i_disksize + sdp->sd_sb.sb_bsize - 1) >> shift;
lblock = offset >> shift;
lblock_stop = (offset + len + sdp->sd_sb.sb_bsize - 1) >> shift;
if (lblock_stop > end_of_file)
- return 0;
+ return 1;
size = (lblock_stop - lblock) << shift;
do {
@@ -1285,12 +1281,11 @@ int gfs2_write_alloc_required(struct gfs2_inode *ip, u64 offset,
bh.b_size = size;
gfs2_block_map(&ip->i_inode, lblock, &bh, 0);
if (!buffer_mapped(&bh))
- return 0;
+ return 1;
size -= bh.b_size;
lblock += (bh.b_size >> ip->i_inode.i_blkbits);
} while(size > 0);
- *alloc_required = 0;
return 0;
}