gfs2: gfs2_stuffed_write_end cleanup
First, change the sanity check in gfs2_stuffed_write_end to check for
the actual write size instead of the requested write size.
Second, use the existing teardown code in gfs2_write_end instead of
duplicating it in gfs2_stuffed_write_end.
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Signed-off-by: Bob Peterson <rpeterso@redhat.com>
diff --git a/fs/gfs2/aops.c b/fs/gfs2/aops.c
index 66e7172..69f25e3 100644
--- a/fs/gfs2/aops.c
+++ b/fs/gfs2/aops.c
@@ -817,7 +817,6 @@
* @inode: The inode
* @dibh: The buffer_head containing the on-disk inode
* @pos: The file position
- * @len: The length of the write
* @copied: How much was actually copied by the VFS
* @page: The page
*
@@ -827,17 +826,15 @@
* Returns: errno
*/
static int gfs2_stuffed_write_end(struct inode *inode, struct buffer_head *dibh,
- loff_t pos, unsigned len, unsigned copied,
+ loff_t pos, unsigned copied,
struct page *page)
{
struct gfs2_inode *ip = GFS2_I(inode);
- struct gfs2_sbd *sdp = GFS2_SB(inode);
- struct gfs2_inode *m_ip = GFS2_I(sdp->sd_statfs_inode);
u64 to = pos + copied;
void *kaddr;
unsigned char *buf = dibh->b_data + sizeof(struct gfs2_dinode);
- BUG_ON(pos + len > gfs2_max_stuffed_size(ip));
+ BUG_ON(pos + copied > gfs2_max_stuffed_size(ip));
kaddr = kmap_atomic(page);
memcpy(buf + pos, kaddr + pos, copied);
@@ -853,20 +850,6 @@
i_size_write(inode, to);
mark_inode_dirty(inode);
}
-
- if (inode == sdp->sd_rindex) {
- adjust_fs_space(inode);
- sdp->sd_rindex_uptodate = 0;
- }
-
- brelse(dibh);
- gfs2_trans_end(sdp);
- if (inode == sdp->sd_rindex) {
- gfs2_glock_dq(&m_ip->i_gh);
- gfs2_holder_uninit(&m_ip->i_gh);
- }
- gfs2_glock_dq(&ip->i_gh);
- gfs2_holder_uninit(&ip->i_gh);
return copied;
}
@@ -880,9 +863,8 @@
* @page: The page that has been written
* @fsdata: The fsdata (unused in GFS2)
*
- * The main write_end function for GFS2. We have a separate one for
- * stuffed files as they are slightly different, otherwise we just
- * put our locking around the VFS provided functions.
+ * The main write_end function for GFS2. We just put our locking around the VFS
+ * provided functions.
*
* Returns: errno
*/
@@ -903,32 +885,37 @@
BUG_ON(gfs2_glock_is_locked_by_me(ip->i_gl) == NULL);
ret = gfs2_meta_inode_buffer(ip, &dibh);
- if (unlikely(ret)) {
- unlock_page(page);
- put_page(page);
- goto failed;
- }
+ if (unlikely(ret))
+ goto out;
- if (gfs2_is_stuffed(ip))
- return gfs2_stuffed_write_end(inode, dibh, pos, len, copied, page);
+ if (gfs2_is_stuffed(ip)) {
+ ret = gfs2_stuffed_write_end(inode, dibh, pos, copied, page);
+ page = NULL;
+ goto out2;
+ }
if (!gfs2_is_writeback(ip))
gfs2_page_add_databufs(ip, page, pos & ~PAGE_MASK, len);
ret = generic_write_end(file, mapping, pos, len, copied, page, fsdata);
+ page = NULL;
if (tr->tr_num_buf_new)
__mark_inode_dirty(inode, I_DIRTY_DATASYNC);
else
gfs2_trans_add_meta(ip->i_gl, dibh);
-
+out2:
if (inode == sdp->sd_rindex) {
adjust_fs_space(inode);
sdp->sd_rindex_uptodate = 0;
}
brelse(dibh);
-failed:
+out:
+ if (page) {
+ unlock_page(page);
+ put_page(page);
+ }
gfs2_trans_end(sdp);
gfs2_inplace_release(ip);
if (ip->i_qadata && ip->i_qadata->qa_qd_num)