diff options
| author | Frederic Weisbecker <[email protected]> | 2010-03-30 02:14:26 +0200 |
|---|---|---|
| committer | Frederic Weisbecker <[email protected]> | 2010-04-09 16:32:02 +0200 |
| commit | 34aacb2920667d405a8df15968b7f71ba46c8f18 (patch) | |
| tree | 7ff58a62c025ce5aa15279176cbb22b85b341382 | |
| parent | 87df842410ce5a86fdca9fbec0dba80d2aa88b6f (diff) | |
procfs: Use generic_file_llseek in /proc/kcore
/proc/kcore has no llseek and then falls down to use default_llseek.
This is racy against read_kcore() that directly manipulates fpos
but it doesn't hold the bkl there so using it in llseek doesn't
protect anything.
Let's use generic_file_llseek() instead.
Signed-off-by: Frederic Weisbecker <[email protected]>
Acked-by: Arnd Bergmann <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Cc: Andrew Morton <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: John Kacur <[email protected]>
Cc: KAMEZAWA Hiroyuki <[email protected]>
Cc: Al Viro <[email protected]>
| -rw-r--r-- | fs/proc/kcore.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/proc/kcore.c b/fs/proc/kcore.c index b442dac8f5f9..396453200ef4 100644 --- a/fs/proc/kcore.c +++ b/fs/proc/kcore.c @@ -557,6 +557,7 @@ static int open_kcore(struct inode *inode, struct file *filp) static const struct file_operations proc_kcore_operations = { .read = read_kcore, .open = open_kcore, + .llseek = generic_file_llseek, }; #ifdef CONFIG_MEMORY_HOTPLUG |