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authorLinus Torvalds <torvalds@linux-foundation.org>2010-05-21 07:29:15 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2010-05-21 07:29:15 -0700
commit677abe49ad017679627af9d3bbd9a7ecb3d94c42 (patch)
tree7cdb7fbc95b51b288e923a3978e17ed2207a4118 /fs/gfs2/bmap.c
parente90e4d9234c953b29267cc4fc9ad804128773313 (diff)
parent6a99be5d7b5973767b1ffa4fa68fed0738589c99 (diff)
Merge git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-2.6-nmw
* git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-2.6-nmw: GFS2: Fix typo GFS2: stuck in inode wait, no glocks stuck GFS2: Eliminate useless err variable GFS2: Fix writing to non-page aligned gfs2_quota structures GFS2: Add some useful messages GFS2: fix quota state reporting GFS2: Various gfs2_logd improvements GFS2: glock livelock GFS2: Clean up stuffed file copying GFS2: docs update GFS2: Remove space from slab cache name
Diffstat (limited to 'fs/gfs2/bmap.c')
-rw-r--r--fs/gfs2/bmap.c17
1 files changed, 10 insertions, 7 deletions
diff --git a/fs/gfs2/bmap.c b/fs/gfs2/bmap.c
index 5e411d5f4697..4a48c0f4b402 100644
--- a/fs/gfs2/bmap.c
+++ b/fs/gfs2/bmap.c
@@ -71,11 +71,13 @@ static int gfs2_unstuffer_page(struct gfs2_inode *ip, struct buffer_head *dibh,
if (!PageUptodate(page)) {
void *kaddr = kmap(page);
+ u64 dsize = i_size_read(inode);
+
+ if (dsize > (dibh->b_size - sizeof(struct gfs2_dinode)))
+ dsize = dibh->b_size - sizeof(struct gfs2_dinode);
- memcpy(kaddr, dibh->b_data + sizeof(struct gfs2_dinode),
- ip->i_disksize);
- memset(kaddr + ip->i_disksize, 0,
- PAGE_CACHE_SIZE - ip->i_disksize);
+ memcpy(kaddr, dibh->b_data + sizeof(struct gfs2_dinode), dsize);
+ memset(kaddr + dsize, 0, PAGE_CACHE_SIZE - dsize);
kunmap(page);
SetPageUptodate(page);
@@ -1038,13 +1040,14 @@ static int trunc_start(struct gfs2_inode *ip, u64 size)
goto out;
if (gfs2_is_stuffed(ip)) {
- ip->i_disksize = size;
+ u64 dsize = size + sizeof(struct gfs2_inode);
ip->i_inode.i_mtime = ip->i_inode.i_ctime = CURRENT_TIME;
gfs2_trans_add_bh(ip->i_gl, dibh, 1);
gfs2_dinode_out(ip, dibh->b_data);
- gfs2_buffer_clear_tail(dibh, sizeof(struct gfs2_dinode) + size);
+ if (dsize > dibh->b_size)
+ dsize = dibh->b_size;
+ gfs2_buffer_clear_tail(dibh, dsize);
error = 1;
-
} else {
if (size & (u64)(sdp->sd_sb.sb_bsize - 1))
error = gfs2_block_truncate_page(ip->i_inode.i_mapping);