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| author | Oleg Nesterov <oleg@redhat.com> | 2014-01-13 16:48:40 +0100 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2014-01-25 03:14:37 -0500 |
| commit | ad46183445043b562856c60b74db664668fb364b (patch) | |
| tree | b13bcb8d44c49b42be5f885b180e620a4982bb8a /fs/file.c | |
| parent | 1deb46e2562561255c34075825fd00f22a858bb3 (diff) | |
| download | linux-stable-ad46183445043b562856c60b74db664668fb364b.tar.gz linux-stable-ad46183445043b562856c60b74db664668fb364b.tar.bz2 linux-stable-ad46183445043b562856c60b74db664668fb364b.zip | |
fs: factor out common code in fget_light() and fget_raw_light()
Apart from FMODE_PATH check fget_light() and fget_raw_light() are
identical, shift the code into the new helper, __fget_light(fd, mask).
Saves 208 bytes.
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/file.c')
| -rw-r--r-- | fs/file.c | 33 |
1 files changed, 9 insertions, 24 deletions
diff --git a/fs/file.c b/fs/file.c index 4ed58a32575e..50c1208f6450 100644 --- a/fs/file.c +++ b/fs/file.c @@ -683,21 +683,21 @@ EXPORT_SYMBOL(fget_raw); * The fput_needed flag returned by fget_light should be passed to the * corresponding fput_light. */ -struct file *fget_light(unsigned int fd, int *fput_needed) +struct file *__fget_light(unsigned int fd, fmode_t mask, int *fput_needed) { - struct file *file; struct files_struct *files = current->files; + struct file *file; *fput_needed = 0; if (atomic_read(&files->count) == 1) { file = __fcheck_files(files, fd); - if (file && (file->f_mode & FMODE_PATH)) + if (file && (file->f_mode & mask)) file = NULL; } else { rcu_read_lock(); file = fcheck_files(files, fd); if (file) { - if (!(file->f_mode & FMODE_PATH) && + if (!(file->f_mode & mask) && atomic_long_inc_not_zero(&file->f_count)) *fput_needed = 1; else @@ -709,30 +709,15 @@ struct file *fget_light(unsigned int fd, int *fput_needed) return file; } +struct file *fget_light(unsigned int fd, int *fput_needed) +{ + return __fget_light(fd, FMODE_PATH, fput_needed); +} EXPORT_SYMBOL(fget_light); struct file *fget_raw_light(unsigned int fd, int *fput_needed) { - struct file *file; - struct files_struct *files = current->files; - - *fput_needed = 0; - if (atomic_read(&files->count) == 1) { - file = __fcheck_files(files, fd); - } else { - rcu_read_lock(); - file = fcheck_files(files, fd); - if (file) { - if (atomic_long_inc_not_zero(&file->f_count)) - *fput_needed = 1; - else - /* Didn't get the reference, someone's freed */ - file = NULL; - } - rcu_read_unlock(); - } - - return file; + return __fget_light(fd, 0, fput_needed); } void set_close_on_exec(unsigned int fd, int flag) |