The patch titled
vfs: factor out duplicated code in get_fs_type()
has been added to the -mm tree. Its filename is
vfs-factor-out-duplicated-code-in-get_fs_type.patch
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See http://userweb.kernel.org/~akpm/stuff/added-to-mm.txt to find
out what to do about this
The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/
------------------------------------------------------
Subject: vfs: factor out duplicated code in get_fs_type()
From: Li Zefan <lizf@xxxxxxxxxxxxxx>
save 14 bytes:
text data bss dec hex filename
1354 32 4 1390 56e fs/filesystems.o.before
text data bss dec hex filename
1340 32 4 1376 560 fs/filesystems.o
Signed-off-by: Li Zefan <lizf@xxxxxxxxxxxxxx>
Cc: Al Viro <viro@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
fs/filesystems.c | 23 +++++++++++++----------
1 file changed, 13 insertions(+), 10 deletions(-)
diff -puN fs/filesystems.c~vfs-factor-out-duplicated-code-in-get_fs_type fs/filesystems.c
--- a/fs/filesystems.c~vfs-factor-out-duplicated-code-in-get_fs_type
+++ a/fs/filesystems.c
@@ -253,24 +253,27 @@ static int __init proc_filesystems_init(
module_init(proc_filesystems_init);
#endif
-struct file_system_type *get_fs_type(const char *name)
+static struct file_system_type *__get_fs_type(const char *name, int len)
{
struct file_system_type *fs;
- const char *dot = strchr(name, '.');
- unsigned len = dot ? dot - name : strlen(name);
read_lock(&file_systems_lock);
fs = *(find_filesystem(name, len));
if (fs && !try_module_get(fs->owner))
fs = NULL;
read_unlock(&file_systems_lock);
- if (!fs && (request_module("%.*s", len, name) == 0)) {
- read_lock(&file_systems_lock);
- fs = *(find_filesystem(name, len));
- if (fs && !try_module_get(fs->owner))
- fs = NULL;
- read_unlock(&file_systems_lock);
- }
+ return fs;
+}
+
+struct file_system_type *get_fs_type(const char *name)
+{
+ struct file_system_type *fs;
+ const char *dot = strchr(name, '.');
+ int len = dot ? dot - name : strlen(name);
+
+ fs = __get_fs_type(name, len);
+ if (!fs && (request_module("%.*s", len, name) == 0))
+ fs = __get_fs_type(name, len);
if (dot && fs && !(fs->fs_flags & FS_HAS_SUBTYPE)) {
put_filesystem(fs);
_
Patches currently in -mm which might be from lizf@xxxxxxxxxxxxxx are
origin.patch
cgroups-fix-a-race-between-cgroup_clone-and-umount.patch
vfs-factor-out-duplicated-code-in-get_fs_type.patch
oom-print-triggering-tasks-cpuset-and-mems-allowed-fix.patch
cgroups-documentation-updates.patch
cgroups-remove-some-redundant-null-checks.patch
ns_cgroup-remove-unused-spinlock.patch
memcg-fix-a-typo-in-kconfig.patch
cgroups-make-root_list-contains-active-hierarchies-only.patch
cgroups-add-inactive-subsystems-to-rootnodesubsys_list.patch
cgroups-add-inactive-subsystems-to-rootnodesubsys_list-fix.patch
cgroups-introduce-link_css_set-to-remove-duplicate-code.patch
cgroups-introduce-link_css_set-to-remove-duplicate-code-fix.patch
cgroups-make-cgroup_path-rcu-safe.patch
cgroups-make-cgroup_path-rcu-safe-fixlet.patch
devices-cgroup-allow-mkfifo.patch
memcg-reduce-size-of-mem_cgroup-by-using-nr_cpu_ids.patch
memcg-new-force_empty-to-free-pages-under-group.patch
memcg-new-force_empty-to-free-pages-under-group-fix.patch
memcg-new-force_empty-to-free-pages-under-group-fix-fix.patch
memcg-handle-swap-caches.patch
memcg-memswap-controller-kconfig.patch
memcg-swap-cgroup-for-remembering-usage.patch
memcg-memswap-controller-core.patch
memcg-memswap-controller-core-make-resize-limit-hold-mutex.patch
memcg-memswap-controller-core-swapcache-fixes.patch
memcg-synchronized-lru.patch
memcg-add-mem_cgroup_disabled.patch
memcg-add-mem_cgroup_disabled-fix.patch
memory-cgroup-hierarchy-documentation-v4.patch
memory-cgroup-resource-counters-for-hierarchy-v4.patch
memory-cgroup-resource-counters-for-hierarchy-v4-checkpatch-fixes.patch
memory-cgroup-hierarchical-reclaim-v4.patch
memory-cgroup-hierarchical-reclaim-v4-checkpatch-fixes.patch
memory-cgroup-hierarchical-reclaim-v4-fix-for-hierarchical-reclaim.patch
memory-cgroup-hierarchy-feature-selector-v4.patch
memory-cgroup-hierarchy-feature-selector-v4-fix.patch
memcg-avoid-unnecessary-system-wide-oom-killer.patch
memcg-avoid-unnecessary-system-wide-oom-killer-fix.patch
memcg-fix-reclaim-result-checks.patch
memcg-swapout-refcnt-fix.patch
memcg-fix-double-free-and-make-refcnt-sane.patch
memcg-use-css_tryget-in-memcg.patch
memcg-use-css_tryget-in-memcg-fix.patch
memcg-fix-lru-accounting-for-swapcache-v2.patch
memcg-fix-shmems-swap-accounting.patch
cgroups-add-a-per-subsystem-hierarchy_mutex.patch
cgroups-use-hierarchy_mutex-in-memory-controller.patch
cgroups-add-css_tryget.patch
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