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| author | Jaegeuk Kim <jaegeuk.kim@samsung.com> | 2013-04-03 22:19:03 +0900 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk.kim@samsung.com> | 2013-04-03 22:19:03 +0900 |
| commit | 49952fa182a2e9b3f40b974278c5b1144f0c918b (patch) | |
| tree | d7c3ed17f9bf942749fcb836c112dabb7da35a21 | |
| parent | 1571f84a1f65f6bf35d99d59ba52bdee6722e4b6 (diff) | |
| download | linux-49952fa182a2e9b3f40b974278c5b1144f0c918b.tar.gz | |
f2fs: reduce redundant spin_lock operations
This patch reduces redundant spin_lock operations in alloc_nid_failed(). The alloc_nid_failed() does not need to delete entry and add one again by triggering spin_lock and spin_unlock redundantly. Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
| -rw-r--r-- | fs/f2fs/node.c | 17 |
1 files changed, 11 insertions, 6 deletions
diff --git a/fs/f2fs/node.c b/fs/f2fs/node.c index 95298ef68262..ad3adbee842a 100644 --- a/fs/f2fs/node.c +++ b/fs/f2fs/node.c @@ -1407,10 +1407,8 @@ void alloc_nid_done(struct f2fs_sb_info *sbi, nid_t nid) spin_lock(&nm_i->free_nid_list_lock); i = __lookup_free_nid_list(nid, &nm_i->free_nid_list); - if (i) { - BUG_ON(i->state != NID_ALLOC); - __del_from_free_nid_list(i); - } + BUG_ON(!i || i->state != NID_ALLOC); + __del_from_free_nid_list(i); spin_unlock(&nm_i->free_nid_list_lock); } @@ -1419,8 +1417,15 @@ void alloc_nid_done(struct f2fs_sb_info *sbi, nid_t nid) */ void alloc_nid_failed(struct f2fs_sb_info *sbi, nid_t nid) { - alloc_nid_done(sbi, nid); - add_free_nid(NM_I(sbi), nid); + struct f2fs_nm_info *nm_i = NM_I(sbi); + struct free_nid *i; + + spin_lock(&nm_i->free_nid_list_lock); + i = __lookup_free_nid_list(nid, &nm_i->free_nid_list); + BUG_ON(!i || i->state != NID_ALLOC); + i->state = NID_NEW; + nm_i->fcnt++; + spin_unlock(&nm_i->free_nid_list_lock); } void recover_node_page(struct f2fs_sb_info *sbi, struct page *page, |