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| author | Jaegeuk Kim <jaegeuk@kernel.org> | 2016-06-03 01:24:24 +0300 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk@kernel.org> | 2016-06-07 20:18:08 +0300 |
| commit | e589c2c477b44e06754508a4e8b883e5ae7294aa (patch) | |
| tree | ccdca1631cd37f7eef8286e0d12ddbe1e677cec8 /fs/f2fs/node.c | |
| parent | 29710bcf9426c84bb6a9b1d94316895ed6143813 (diff) | |
| download | linux-e589c2c477b44e06754508a4e8b883e5ae7294aa.tar.xz | |
f2fs: control not to exceed # of cached nat entries
This is to avoid cache entry management overhead including radix tree.
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'fs/f2fs/node.c')
| -rw-r--r-- | fs/f2fs/node.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/fs/f2fs/node.c b/fs/f2fs/node.c index 16532b31dcd6..b448c8fec7fc 100644 --- a/fs/f2fs/node.c +++ b/fs/f2fs/node.c @@ -52,6 +52,10 @@ bool available_free_memory(struct f2fs_sb_info *sbi, int type) mem_size = (nm_i->nat_cnt * sizeof(struct nat_entry)) >> PAGE_SHIFT; res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 2); + if (excess_cached_nats(sbi)) + res = false; + if (nm_i->nat_cnt > DEF_NAT_CACHE_THRESHOLD) + res = false; } else if (type == DIRTY_DENTS) { if (sbi->sb->s_bdi->wb.dirty_exceeded) return false; |