From: Eric Biggers <[email protected]> When a filesystem encryption key is removed, we need all files which had been "unlocked" (had ->i_crypt_info set up) with it to appear "locked" again. This is most easily done by evicting the inodes. This can currently be done using 'echo 2 > /proc/sys/vm/drop_caches'; however, that is overkill and not usable by non-root users. In preparation for allowing fs/crypto/ to evict just the needed inodes, make dispose_list() non-static. For clarity also rename it to evict_inode_list().
Signed-off-by: Eric Biggers <[email protected]> --- fs/inode.c | 18 +++++++++--------- include/linux/fs.h | 1 + 2 files changed, 10 insertions(+), 9 deletions(-) diff --git a/fs/inode.c b/fs/inode.c index 037df483c9af..10147197c1de 100644 --- a/fs/inode.c +++ b/fs/inode.c @@ -574,13 +574,13 @@ static void evict(struct inode *inode) } /* - * dispose_list - dispose of the contents of a local list - * @head: the head of the list to free + * evict_inode_list - evict each inode in a local list of inodes + * @head: the head of the list * - * Dispose-list gets a local list with local inodes in it, so it doesn't + * This gets a local list with local inodes in it, so it doesn't * need to worry about list corruption and SMP locks. */ -static void dispose_list(struct list_head *head) +void evict_inode_list(struct list_head *head) { while (!list_empty(head)) { struct inode *inode; @@ -632,13 +632,13 @@ void evict_inodes(struct super_block *sb) if (need_resched()) { spin_unlock(&sb->s_inode_list_lock); cond_resched(); - dispose_list(&dispose); + evict_inode_list(&dispose); goto again; } } spin_unlock(&sb->s_inode_list_lock); - dispose_list(&dispose); + evict_inode_list(&dispose); } EXPORT_SYMBOL_GPL(evict_inodes); @@ -683,7 +683,7 @@ int invalidate_inodes(struct super_block *sb, bool kill_dirty) } spin_unlock(&sb->s_inode_list_lock); - dispose_list(&dispose); + evict_inode_list(&dispose); return busy; } @@ -770,7 +770,7 @@ static enum lru_status inode_lru_isolate(struct list_head *item, * Walk the superblock inode LRU for freeable inodes and attempt to free them. * This is called from the superblock shrinker function with a number of inodes * to trim from the LRU. Inodes to be freed are moved to a temporary list and - * then are freed outside inode_lock by dispose_list(). + * then are freed outside inode_lock by evict_inode_list(). */ long prune_icache_sb(struct super_block *sb, struct shrink_control *sc) { @@ -779,7 +779,7 @@ long prune_icache_sb(struct super_block *sb, struct shrink_control *sc) freed = list_lru_shrink_walk(&sb->s_inode_lru, sc, inode_lru_isolate, &freeable); - dispose_list(&freeable); + evict_inode_list(&freeable); return freed; } diff --git a/include/linux/fs.h b/include/linux/fs.h index 326cbb044596..ce18ece60da4 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -2987,6 +2987,7 @@ extern void discard_new_inode(struct inode *); extern unsigned int get_next_ino(void); extern void evict_inodes(struct super_block *sb); extern void inode_lru_list_del(struct inode *inode); +extern void evict_inode_list(struct list_head *head); extern void __iget(struct inode * inode); extern void iget_failed(struct inode *); -- 2.20.1 _______________________________________________ Linux-f2fs-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel
