diff options
| -rw-r--r-- | fs/inode.c | 27 | ||||
| -rw-r--r-- | fs/super.c | 1 | ||||
| -rw-r--r-- | include/linux/fs.h | 3 |
3 files changed, 16 insertions, 15 deletions
diff --git a/fs/inode.c b/fs/inode.c index 8c3491302e0..0450e25aeda 100644 --- a/fs/inode.c +++ b/fs/inode.c @@ -33,7 +33,7 @@ * * inode->i_lock protects: * inode->i_state, inode->i_hash, __iget() - * inode_lru_lock protects: + * inode->i_sb->s_inode_lru_lock protects: * inode->i_sb->s_inode_lru, inode->i_lru * inode_sb_list_lock protects: * sb->s_inodes, inode->i_sb_list @@ -46,7 +46,7 @@ * * inode_sb_list_lock * inode->i_lock - * inode_lru_lock + * inode->i_sb->s_inode_lru_lock * * inode_wb_list_lock * inode->i_lock @@ -64,8 +64,6 @@ static unsigned int i_hash_shift __read_mostly; static struct hlist_head *inode_hashtable __read_mostly; static __cacheline_aligned_in_smp DEFINE_SPINLOCK(inode_hash_lock); -static DEFINE_SPINLOCK(inode_lru_lock); - __cacheline_aligned_in_smp DEFINE_SPINLOCK(inode_sb_list_lock); __cacheline_aligned_in_smp DEFINE_SPINLOCK(inode_wb_list_lock); @@ -342,24 +340,24 @@ EXPORT_SYMBOL(ihold); static void inode_lru_list_add(struct inode *inode) { - spin_lock(&inode_lru_lock); + spin_lock(&inode->i_sb->s_inode_lru_lock); if (list_empty(&inode->i_lru)) { list_add(&inode->i_lru, &inode->i_sb->s_inode_lru); inode->i_sb->s_nr_inodes_unused++; this_cpu_inc(nr_unused); } - spin_unlock(&inode_lru_lock); + spin_unlock(&inode->i_sb->s_inode_lru_lock); } static void inode_lru_list_del(struct inode *inode) { - spin_lock(&inode_lru_lock); + spin_lock(&inode->i_sb->s_inode_lru_lock); if (!list_empty(&inode->i_lru)) { list_del_init(&inode->i_lru); inode->i_sb->s_nr_inodes_unused--; this_cpu_dec(nr_unused); } - spin_unlock(&inode_lru_lock); + spin_unlock(&inode->i_sb->s_inode_lru_lock); } /** @@ -615,7 +613,8 @@ static int can_unuse(struct inode *inode) /* * Scan `goal' inodes on the unused list for freeable ones. They are moved to a - * temporary list and then are freed outside inode_lru_lock by dispose_list(). + * temporary list and then are freed outside sb->s_inode_lru_lock by + * dispose_list(). * * Any inodes which are pinned purely because of attached pagecache have their * pagecache removed. If the inode has metadata buffers attached to @@ -635,7 +634,7 @@ static void shrink_icache_sb(struct super_block *sb, int *nr_to_scan) int nr_scanned; unsigned long reap = 0; - spin_lock(&inode_lru_lock); + spin_lock(&sb->s_inode_lru_lock); for (nr_scanned = *nr_to_scan; nr_scanned >= 0; nr_scanned--) { struct inode *inode; @@ -645,7 +644,7 @@ static void shrink_icache_sb(struct super_block *sb, int *nr_to_scan) inode = list_entry(sb->s_inode_lru.prev, struct inode, i_lru); /* - * we are inverting the inode_lru_lock/inode->i_lock here, + * we are inverting the sb->s_inode_lru_lock/inode->i_lock here, * so use a trylock. If we fail to get the lock, just move the * inode to the back of the list so we don't spin on it. */ @@ -677,12 +676,12 @@ static void shrink_icache_sb(struct super_block *sb, int *nr_to_scan) if (inode_has_buffers(inode) || inode->i_data.nrpages) { __iget(inode); spin_unlock(&inode->i_lock); - spin_unlock(&inode_lru_lock); + spin_unlock(&sb->s_inode_lru_lock); if (remove_inode_buffers(inode)) reap += invalidate_mapping_pages(&inode->i_data, 0, -1); iput(inode); - spin_lock(&inode_lru_lock); + spin_lock(&sb->s_inode_lru_lock); if (inode != list_entry(sb->s_inode_lru.next, struct inode, i_lru)) @@ -707,7 +706,7 @@ static void shrink_icache_sb(struct super_block *sb, int *nr_to_scan) __count_vm_events(KSWAPD_INODESTEAL, reap); else __count_vm_events(PGINODESTEAL, reap); - spin_unlock(&inode_lru_lock); + spin_unlock(&sb->s_inode_lru_lock); *nr_to_scan = nr_scanned; dispose_list(&freeable); diff --git a/fs/super.c b/fs/super.c index e8e6dbfefe8..73ab9f9b357 100644 --- a/fs/super.c +++ b/fs/super.c @@ -78,6 +78,7 @@ static struct super_block *alloc_super(struct file_system_type *type) INIT_LIST_HEAD(&s->s_inodes); INIT_LIST_HEAD(&s->s_dentry_lru); INIT_LIST_HEAD(&s->s_inode_lru); + spin_lock_init(&s->s_inode_lru_lock); init_rwsem(&s->s_umount); mutex_init(&s->s_lock); lockdep_set_class(&s->s_umount, &type->s_umount_key); diff --git a/include/linux/fs.h b/include/linux/fs.h index 9724f0a4874..460d2cc21ec 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -1397,7 +1397,8 @@ struct super_block { struct list_head s_dentry_lru; /* unused dentry lru */ int s_nr_dentry_unused; /* # of dentry on lru */ - /* inode_lru_lock protects s_inode_lru and s_nr_inodes_unused */ + /* s_inode_lru_lock protects s_inode_lru and s_nr_inodes_unused */ + spinlock_t s_inode_lru_lock ____cacheline_aligned_in_smp; struct list_head s_inode_lru; /* unused inode lru */ int s_nr_inodes_unused; /* # of inodes on lru */ |