diff options
author | Russell King <rmk+kernel@arm.linux.org.uk> | 2010-03-08 20:21:04 +0000 |
---|---|---|
committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2010-03-08 20:21:04 +0000 |
commit | 988addf82e4c03739375279de73929580a2d4a6a (patch) | |
tree | 989ae1cd4e264bbad80c65f04480486246e7b9f3 /include/linux/fdtable.h | |
parent | 004c1c7096659d352b83047a7593e91d8a30e3c5 (diff) | |
parent | 25cf84cf377c0aae5dbcf937ea89bc7893db5176 (diff) |
Merge branch 'origin' into devel-stable
Conflicts:
arch/arm/mach-mx2/devices.c
arch/arm/mach-mx2/devices.h
sound/soc/pxa/pxa-ssp.c
Diffstat (limited to 'include/linux/fdtable.h')
-rw-r--r-- | include/linux/fdtable.h | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/include/linux/fdtable.h b/include/linux/fdtable.h index a2ec74bc481..013dc529e95 100644 --- a/include/linux/fdtable.h +++ b/include/linux/fdtable.h @@ -57,7 +57,14 @@ struct files_struct { struct file * fd_array[NR_OPEN_DEFAULT]; }; -#define files_fdtable(files) (rcu_dereference((files)->fdt)) +#define rcu_dereference_check_fdtable(files, fdtfd) \ + (rcu_dereference_check((fdtfd), \ + rcu_read_lock_held() || \ + lockdep_is_held(&(files)->file_lock) || \ + atomic_read(&(files)->count) == 1)) + +#define files_fdtable(files) \ + (rcu_dereference_check_fdtable((files), (files)->fdt)) struct file_operations; struct vfsmount; @@ -78,7 +85,7 @@ static inline struct file * fcheck_files(struct files_struct *files, unsigned in struct fdtable *fdt = files_fdtable(files); if (fd < fdt->max_fds) - file = rcu_dereference(fdt->fd[fd]); + file = rcu_dereference_check_fdtable(files, fdt->fd[fd]); return file; } |