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-rw-r--r--fs/dcache.c42
1 files changed, 14 insertions, 28 deletions
diff --git a/fs/dcache.c b/fs/dcache.c
index 7b4b080219f8..43455776711e 100644
--- a/fs/dcache.c
+++ b/fs/dcache.c
@@ -95,6 +95,14 @@ static void d_free(struct dentry *dentry)
95 call_rcu(&dentry->d_u.d_rcu, d_callback); 95 call_rcu(&dentry->d_u.d_rcu, d_callback);
96} 96}
97 97
98static void dentry_lru_remove(struct dentry *dentry)
99{
100 if (!list_empty(&dentry->d_lru)) {
101 list_del_init(&dentry->d_lru);
102 dentry_stat.nr_unused--;
103 }
104}
105
98/* 106/*
99 * Release the dentry's inode, using the filesystem 107 * Release the dentry's inode, using the filesystem
100 * d_iput() operation if defined. 108 * d_iput() operation if defined.
@@ -211,13 +219,7 @@ repeat:
211unhash_it: 219unhash_it:
212 __d_drop(dentry); 220 __d_drop(dentry);
213kill_it: 221kill_it:
214 /* If dentry was on d_lru list 222 dentry_lru_remove(dentry);
215 * delete it from there
216 */
217 if (!list_empty(&dentry->d_lru)) {
218 list_del(&dentry->d_lru);
219 dentry_stat.nr_unused--;
220 }
221 dentry = d_kill(dentry); 223 dentry = d_kill(dentry);
222 if (dentry) 224 if (dentry)
223 goto repeat; 225 goto repeat;
@@ -285,10 +287,7 @@ int d_invalidate(struct dentry * dentry)
285static inline struct dentry * __dget_locked(struct dentry *dentry) 287static inline struct dentry * __dget_locked(struct dentry *dentry)
286{ 288{
287 atomic_inc(&dentry->d_count); 289 atomic_inc(&dentry->d_count);
288 if (!list_empty(&dentry->d_lru)) { 290 dentry_lru_remove(dentry);
289 dentry_stat.nr_unused--;
290 list_del_init(&dentry->d_lru);
291 }
292 return dentry; 291 return dentry;
293} 292}
294 293
@@ -404,10 +403,7 @@ static void prune_one_dentry(struct dentry * dentry)
404 403
405 if (dentry->d_op && dentry->d_op->d_delete) 404 if (dentry->d_op && dentry->d_op->d_delete)
406 dentry->d_op->d_delete(dentry); 405 dentry->d_op->d_delete(dentry);
407 if (!list_empty(&dentry->d_lru)) { 406 dentry_lru_remove(dentry);
408 list_del(&dentry->d_lru);
409 dentry_stat.nr_unused--;
410 }
411 __d_drop(dentry); 407 __d_drop(dentry);
412 dentry = d_kill(dentry); 408 dentry = d_kill(dentry);
413 spin_lock(&dcache_lock); 409 spin_lock(&dcache_lock);
@@ -596,10 +592,7 @@ static void shrink_dcache_for_umount_subtree(struct dentry *dentry)
596 592
597 /* detach this root from the system */ 593 /* detach this root from the system */
598 spin_lock(&dcache_lock); 594 spin_lock(&dcache_lock);
599 if (!list_empty(&dentry->d_lru)) { 595 dentry_lru_remove(dentry);
600 dentry_stat.nr_unused--;
601 list_del_init(&dentry->d_lru);
602 }
603 __d_drop(dentry); 596 __d_drop(dentry);
604 spin_unlock(&dcache_lock); 597 spin_unlock(&dcache_lock);
605 598
@@ -613,11 +606,7 @@ static void shrink_dcache_for_umount_subtree(struct dentry *dentry)
613 spin_lock(&dcache_lock); 606 spin_lock(&dcache_lock);
614 list_for_each_entry(loop, &dentry->d_subdirs, 607 list_for_each_entry(loop, &dentry->d_subdirs,
615 d_u.d_child) { 608 d_u.d_child) {
616 if (!list_empty(&loop->d_lru)) { 609 dentry_lru_remove(loop);
617 dentry_stat.nr_unused--;
618 list_del_init(&loop->d_lru);
619 }
620
621 __d_drop(loop); 610 __d_drop(loop);
622 cond_resched_lock(&dcache_lock); 611 cond_resched_lock(&dcache_lock);
623 } 612 }
@@ -799,10 +788,7 @@ resume:
799 struct dentry *dentry = list_entry(tmp, struct dentry, d_u.d_child); 788 struct dentry *dentry = list_entry(tmp, struct dentry, d_u.d_child);
800 next = tmp->next; 789 next = tmp->next;
801 790
802 if (!list_empty(&dentry->d_lru)) { 791 dentry_lru_remove(dentry);
803 dentry_stat.nr_unused--;
804 list_del_init(&dentry->d_lru);
805 }
806 /* 792 /*
807 * move only zero ref count dentries to the end 793 * move only zero ref count dentries to the end
808 * of the unused list for prune_dcache 794 * of the unused list for prune_dcache