| commit | 8fe5e8ff93473129957c6d4a7df80046186b9c7b | |
| author | Yongqiang Yang <xiaoqiangnk@gmail.com> | |
| Wed, 14 Dec 2011 02:51:55 +0000 (13 21:51 -0500) | ||
| committer | Greg Kroah-Hartman <gregkh@suse.de> | |
| Wed, 21 Dec 2011 20:57:44 +0000 (21 12:57 -0800) | ||
| tree | 9561105270aeec6e9c28fc3cbb430040a5be6ca7 | treesnapshot (tar.gz zip) |
| parent | dda54df863232231ce851045834f475f02a7e565 | commitdiff |
ext4: avoid potential hang in mpage_submit_io() when blocksize < pagesize
commit 13a79a4741d37fda2fbafb953f0f301dc007928f upstream.
If there is an unwritten but clean buffer in a page and there is a
dirty buffer after the buffer, then mpage_submit_io does not write the
dirty buffer out. As a result, da_writepages loops forever.
This patch fixes the problem by checking dirty flag.
Signed-off-by: Yongqiang Yang <xiaoqiangnk@gmail.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
commit 13a79a4741d37fda2fbafb953f0f301dc007928f upstream.
If there is an unwritten but clean buffer in a page and there is a
dirty buffer after the buffer, then mpage_submit_io does not write the
dirty buffer out. As a result, da_writepages loops forever.
This patch fixes the problem by checking dirty flag.
Signed-off-by: Yongqiang Yang <xiaoqiangnk@gmail.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| fs/ext4/inode.c | diffblobblamehistory |