diff options
| author | Jonathan Corbet <corbet@lwn.net> | 2009-02-06 15:25:24 -0700 |
|---|---|---|
| committer | Jonathan Corbet <corbet@lwn.net> | 2009-03-16 08:32:27 -0600 |
| commit | db1dd4d376134eba0e08af523b61cc566a4ea1cd (patch) | |
| tree | 8882c673abbaa5713511b7046493fa862b9140d1 /include/linux/fs.h | |
| parent | 684999149002dd046269666a390458e0acb38280 (diff) | |
| download | talos-obmc-linux-db1dd4d376134eba0e08af523b61cc566a4ea1cd.tar.gz talos-obmc-linux-db1dd4d376134eba0e08af523b61cc566a4ea1cd.zip | |
Use f_lock to protect f_flags
Traditionally, changes to struct file->f_flags have been done under BKL
protection, or with no protection at all. This patch causes all f_flags
changes after file open/creation time to be done under protection of
f_lock. This allows the removal of some BKL usage and fixes a number of
longstanding (if microscopic) races.
Reviewed-by: Christoph Hellwig <hch@lst.de>
Cc: Al Viro <viro@ZenIV.linux.org.uk>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Diffstat (limited to 'include/linux/fs.h')
| -rw-r--r-- | include/linux/fs.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/fs.h b/include/linux/fs.h index 2011600d12c7..7428c6d35e65 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -848,7 +848,7 @@ struct file { #define f_dentry f_path.dentry #define f_vfsmnt f_path.mnt const struct file_operations *f_op; - spinlock_t f_lock; /* f_ep_links */ + spinlock_t f_lock; /* f_ep_links, f_flags */ atomic_long_t f_count; unsigned int f_flags; fmode_t f_mode; |
