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| author | Jaegeuk Kim <jaegeuk.kim@samsung.com> | 2013-03-21 12:53:19 +0900 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk.kim@samsung.com> | 2013-03-27 09:16:18 +0900 |
| commit | fa37241743ac26ba0ac6f54579158c2fae310a5c (patch) | |
| tree | 3d1fed6b28e7e3f085b5f72e5ad2a706d5a7712b /fs/f2fs/node.c | |
| parent | 0ff153a2f1fa7ef31d6d9bc9ce6c3815dede55e6 (diff) | |
| download | blackbird-op-linux-fa37241743ac26ba0ac6f54579158c2fae310a5c.tar.gz blackbird-op-linux-fa37241743ac26ba0ac6f54579158c2fae310a5c.zip | |
f2fs: remain nat cache entries for further free nid allocation
In the checkpoint flow, the f2fs investigates the total nat cache entries.
Previously, if an entry has NULL_ADDR, f2fs drops the entry and adds the
obsolete nid to the free nid list.
However, this free nid will be reused sooner, resulting in its nat entry miss.
In order to avoid this, we don't need to drop the nat cache entry at this moment.
Reviewed-by: Namjae Jeon <namjae.jeon@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
Diffstat (limited to 'fs/f2fs/node.c')
| -rw-r--r-- | fs/f2fs/node.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/fs/f2fs/node.c b/fs/f2fs/node.c index f7b03ba9c0d7..0177f9434c25 100644 --- a/fs/f2fs/node.c +++ b/fs/f2fs/node.c @@ -1621,11 +1621,11 @@ flush_now: nid_in_journal(sum, offset) = cpu_to_le32(nid); } - if (nat_get_blkaddr(ne) == NULL_ADDR) { + if (nat_get_blkaddr(ne) == NULL_ADDR && + !add_free_nid(NM_I(sbi), nid)) { write_lock(&nm_i->nat_tree_lock); __del_from_nat_cache(nm_i, ne); write_unlock(&nm_i->nat_tree_lock); - add_free_nid(NM_I(sbi), nid); } else { write_lock(&nm_i->nat_tree_lock); __clear_nat_cache_dirty(nm_i, ne); |
