| From bbd465df73f0d8ba41b8a0732766a243d0f5b356 Mon Sep 17 00:00:00 2001 |
| From: Mikulas Patocka <mikulas@artax.karlin.mff.cuni.cz> |
| Date: Sun, 9 Jun 2013 01:25:57 +0200 |
| Subject: hpfs: fix warnings when the filesystem fills up |
| |
| From: Mikulas Patocka <mikulas@artax.karlin.mff.cuni.cz> |
| |
| commit bbd465df73f0d8ba41b8a0732766a243d0f5b356 upstream. |
| |
| This patch fixes warnings due to missing lock on write error path. |
| |
| WARNING: at fs/hpfs/hpfs_fn.h:353 hpfs_truncate+0x75/0x80 [hpfs]() |
| Hardware name: empty |
| Pid: 26563, comm: dd Tainted: P O 3.9.4 #12 |
| Call Trace: |
| hpfs_truncate+0x75/0x80 [hpfs] |
| hpfs_write_begin+0x84/0x90 [hpfs] |
| _hpfs_bmap+0x10/0x10 [hpfs] |
| generic_file_buffered_write+0x121/0x2c0 |
| __generic_file_aio_write+0x1c7/0x3f0 |
| generic_file_aio_write+0x7c/0x100 |
| do_sync_write+0x98/0xd0 |
| hpfs_file_write+0xd/0x50 [hpfs] |
| vfs_write+0xa2/0x160 |
| sys_write+0x51/0xa0 |
| page_fault+0x22/0x30 |
| system_call_fastpath+0x1a/0x1f |
| |
| Signed-off-by: Mikulas Patocka <mikulas@artax.karlin.mff.cuni.cz> |
| Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
| Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
| |
| --- |
| fs/hpfs/file.c | 4 ++++ |
| 1 file changed, 4 insertions(+) |
| |
| --- a/fs/hpfs/file.c |
| +++ b/fs/hpfs/file.c |
| @@ -109,10 +109,14 @@ static void hpfs_write_failed(struct add |
| { |
| struct inode *inode = mapping->host; |
| |
| + hpfs_lock(inode->i_sb); |
| + |
| if (to > inode->i_size) { |
| truncate_pagecache(inode, to, inode->i_size); |
| hpfs_truncate(inode); |
| } |
| + |
| + hpfs_unlock(inode->i_sb); |
| } |
| |
| static int hpfs_write_begin(struct file *file, struct address_space *mapping, |
