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| author | Jaegeuk Kim <jaegeuk@kernel.org> | 2015-08-20 18:51:56 +0300 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk@kernel.org> | 2015-08-24 19:37:21 +0300 |
| commit | 80c545055dc7c1f7f487176fe0aac17896a4b7af (patch) | |
| tree | b8c4ffbb9aa10da0c26ab5f7caf264e68803b685 /fs/f2fs/checkpoint.c | |
| parent | dac2ddefe62841efc0b6cdcb0bbf3e3594aa01bf (diff) | |
| download | linux-80c545055dc7c1f7f487176fe0aac17896a4b7af.tar.xz | |
f2fs: use __GFP_NOFAIL to avoid infinite loop
__GFP_NOFAIL can avoid retrying the whole path of kmem_cache_alloc and
bio_alloc.
And, it also fixes the use cases of GFP_ATOMIC correctly.
Suggested-by: Chao Yu <chao2.yu@samsung.com>
Reviewed-by: Chao Yu <chao2.yu@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'fs/f2fs/checkpoint.c')
| -rw-r--r-- | fs/f2fs/checkpoint.c | 21 |
1 files changed, 8 insertions, 13 deletions
diff --git a/fs/f2fs/checkpoint.c b/fs/f2fs/checkpoint.c index 890e4d4c39d7..c5a38e352a80 100644 --- a/fs/f2fs/checkpoint.c +++ b/fs/f2fs/checkpoint.c @@ -336,26 +336,18 @@ const struct address_space_operations f2fs_meta_aops = { static void __add_ino_entry(struct f2fs_sb_info *sbi, nid_t ino, int type) { struct inode_management *im = &sbi->im[type]; - struct ino_entry *e; + struct ino_entry *e, *tmp; + + tmp = f2fs_kmem_cache_alloc(ino_entry_slab, GFP_NOFS); retry: - if (radix_tree_preload(GFP_NOFS)) { - cond_resched(); - goto retry; - } + radix_tree_preload(GFP_NOFS | __GFP_NOFAIL); spin_lock(&im->ino_lock); - e = radix_tree_lookup(&im->ino_root, ino); if (!e) { - e = kmem_cache_alloc(ino_entry_slab, GFP_ATOMIC); - if (!e) { - spin_unlock(&im->ino_lock); - radix_tree_preload_end(); - goto retry; - } + e = tmp; if (radix_tree_insert(&im->ino_root, ino, e)) { spin_unlock(&im->ino_lock); - kmem_cache_free(ino_entry_slab, e); radix_tree_preload_end(); goto retry; } @@ -368,6 +360,9 @@ retry: } spin_unlock(&im->ino_lock); radix_tree_preload_end(); + + if (e != tmp) + kmem_cache_free(ino_entry_slab, tmp); } static void __remove_ino_entry(struct f2fs_sb_info *sbi, nid_t ino, int type) |