Techwizz/kernel-fxtec-pro1x
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

gfs2: gfs2_stuffed_write_end cleanup

Browse source 
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>
This commit is contained in:
Andreas Gruenbacher 2018-06-04 07:45:53 -05:00 committed by Bob Peterson
parent 7841b9f084
commit d6382a3505
1 changed files with 18 additions and 31 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

49
fs/gfs2/aops.c
View file

@ -817,7 +817,6 @@ static void adjust_fs_space(struct inode *inode)
* @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 @@ static void adjust_fs_space(struct inode *inode)
* 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 @@ static int gfs2_stuffed_write_end(struct inode *inode, struct buffer_head *dibh,
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 @@ static int gfs2_stuffed_write_end(struct inode *inode, struct buffer_head *dibh,
* @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 @@ static int gfs2_write_end(struct file *file, struct address_space *mapping,
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)