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| author | Jan Kara <jack@suse.cz> | 2014-06-26 20:28:57 +0400 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2014-06-26 20:28:57 +0400 |
| commit | 77ea2a4ba657a1ad4fb7c64bc5cdce84b8a132b6 (patch) | |
| tree | 685cfe8f3bb5e96a2be066a88065bf762928a559 /fs | |
| parent | e43bb4e612b402a631bc549ac496f78bc7a79438 (diff) | |
| download | linux-77ea2a4ba657a1ad4fb7c64bc5cdce84b8a132b6.tar.xz | |
ext4: Fix block zeroing when punching holes in indirect block files
free_holes_block() passed local variable as a block pointer
to ext4_clear_blocks(). Thus ext4_clear_blocks() zeroed out this local
variable instead of proper place in inode / indirect block. We later
zero out proper place in inode / indirect block but don't dirty the
inode / buffer again which can lead to subtle issues (some changes e.g.
to inode can be lost).
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/ext4/indirect.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/fs/ext4/indirect.c b/fs/ext4/indirect.c index f85bafd474dc..6f3bb55567b6 100644 --- a/fs/ext4/indirect.c +++ b/fs/ext4/indirect.c @@ -1335,8 +1335,8 @@ static int free_hole_blocks(handle_t *handle, struct inode *inode, if (level == 0 || (bh && all_zeroes((__le32 *)bh->b_data, (__le32 *)bh->b_data + addr_per_block))) { - ext4_free_data(handle, inode, parent_bh, &blk, &blk+1); - *i_data = 0; + ext4_free_data(handle, inode, parent_bh, + i_data, i_data + 1); } brelse(bh); bh = NULL; |