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authorDave Chinner <dchinner@redhat.com>2015-03-04 20:37:22 +0300
committerJosef Bacik <jbacik@fb.com>2015-08-18 01:39:46 +0300
commit74278da9f70d84d715601fe794567a6d2bfdf078 (patch)
tree49262a88fc42b85bfe4930f5cd7a832d5ba647c6 /include/linux/fsnotify_backend.h
parentcbedaac63481dea52327127a9f1c60f092bd6b07 (diff)
downloadlinux-74278da9f70d84d715601fe794567a6d2bfdf078.tar.xz
inode: convert inode_sb_list_lock to per-sb
The process of reducing contention on per-superblock inode lists starts with moving the locking to match the per-superblock inode list. This takes the global lock out of the picture and reduces the contention problems to within a single filesystem. This doesn't get rid of contention as the locks still have global CPU scope, but it does isolate operations on different superblocks form each other. Signed-off-by: Dave Chinner <dchinner@redhat.com> Signed-off-by: Josef Bacik <jbacik@fb.com> Reviewed-by: Jan Kara <jack@suse.cz> Reviewed-by: Christoph Hellwig <hch@lst.de> Tested-by: Dave Chinner <dchinner@redhat.com>
Diffstat (limited to 'include/linux/fsnotify_backend.h')
-rw-r--r--include/linux/fsnotify_backend.h4
1 files changed, 2 insertions, 2 deletions
diff --git a/include/linux/fsnotify_backend.h b/include/linux/fsnotify_backend.h
index 65a517dd32f7..0390ee69c439 100644
--- a/include/linux/fsnotify_backend.h
+++ b/include/linux/fsnotify_backend.h
@@ -357,7 +357,7 @@ extern void fsnotify_clear_marks_by_group_flags(struct fsnotify_group *group, un
extern void fsnotify_clear_marks_by_group(struct fsnotify_group *group);
extern void fsnotify_get_mark(struct fsnotify_mark *mark);
extern void fsnotify_put_mark(struct fsnotify_mark *mark);
-extern void fsnotify_unmount_inodes(struct list_head *list);
+extern void fsnotify_unmount_inodes(struct super_block *sb);
/* put here because inotify does some weird stuff when destroying watches */
extern void fsnotify_init_event(struct fsnotify_event *event,
@@ -393,7 +393,7 @@ static inline u32 fsnotify_get_cookie(void)
return 0;
}
-static inline void fsnotify_unmount_inodes(struct list_head *list)
+static inline void fsnotify_unmount_inodes(struct super_block *sb)
{}
#endif /* CONFIG_FSNOTIFY */