diff options
| author | Pavel Emelianov <xemul@sw.ru> | 2007-07-10 17:22:26 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-07-10 17:51:13 -0700 |
| commit | bcf67e16251c42302499499b1c50f7d35622f564 (patch) | |
| tree | 3df64aa83005c0a153acf3a1a0d7a6e6d49dc688 /include | |
| parent | c14d444b55f285063a4018c10d521614b70b581a (diff) | |
Make common helpers for seq_files that work with list_heads
Many places in kernel use seq_file API to iterate over a regular list_head.
The code for such iteration is identical in all the places, so it's worth
introducing a common helpers.
This makes code about 300 lines smaller:
The first version of this patch made the helper functions static inline
in the seq_file.h header. This patch moves them to the fs/seq_file.c as
Andrew proposed. The vmlinux .text section sizes are as follows:
2.6.22-rc1-mm1: 0x001794d5
with the previous version: 0x00179505
with this patch: 0x00179135
The config file used was make allnoconfig with the "y" inclusion of all
the possible options to make the files modified by the patch compile plus
drivers I have on the test node.
This patch:
Many places in kernel use seq_file API to iterate over a regular list_head.
The code for such iteration is identical in all the places, so it's worth
introducing a common helpers.
Signed-off-by: Pavel Emelianov <xemul@openvz.org>
Cc: "David S. Miller" <davem@davemloft.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/seq_file.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/include/linux/seq_file.h b/include/linux/seq_file.h index 3e3cccbb1cac..83783ab0f552 100644 --- a/include/linux/seq_file.h +++ b/include/linux/seq_file.h @@ -50,5 +50,16 @@ int seq_release_private(struct inode *, struct file *); #define SEQ_START_TOKEN ((void *)1) +/* + * Helpers for iteration over list_head-s in seq_files + */ + +extern struct list_head *seq_list_start(struct list_head *head, + loff_t pos); +extern struct list_head *seq_list_start_head(struct list_head *head, + loff_t pos); +extern struct list_head *seq_list_next(void *v, struct list_head *head, + loff_t *ppos); + #endif #endif |