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authorMikulas Patocka <mikulas@artax.karlin.mff.cuni.cz>2013-06-09 01:25:57 +0200
committerLinus Torvalds <torvalds@linux-foundation.org>2013-06-08 17:39:40 -0700
commitbbd465df73f0d8ba41b8a0732766a243d0f5b356 (patch)
tree540185afd63cb5030b9f1a907df2337f19f27502
parent81db4dbf592b486ac2bc7cabfb328ee2a6c4725d (diff)
hpfs: fix warnings when the filesystem fills up
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> Cc: stable@kernel.org # 2.6.39+ Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rw-r--r--fs/hpfs/file.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/fs/hpfs/file.c b/fs/hpfs/file.c
index 3027f4dbbab5..e4ba5fe4c3b5 100644
--- a/fs/hpfs/file.c
+++ b/fs/hpfs/file.c
@@ -109,10 +109,14 @@ static void hpfs_write_failed(struct address_space *mapping, loff_t to)
{
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,