diff options
Diffstat (limited to 'fs/f2fs/node.c')
| -rw-r--r-- | fs/f2fs/node.c | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/fs/f2fs/node.c b/fs/f2fs/node.c index ac91107..6e10c2a 100644 --- a/fs/f2fs/node.c +++ b/fs/f2fs/node.c @@ -1635,6 +1635,34 @@ void alloc_nid_failed(struct f2fs_sb_info *sbi, nid_t nid) kmem_cache_free(free_nid_slab, i); } +int try_to_free_nids(struct f2fs_sb_info *sbi, int nr_shrink) +{ + struct f2fs_nm_info *nm_i = NM_I(sbi); + struct free_nid *i, *next; + int nr = nr_shrink; + + if (!mutex_trylock(&nm_i->build_lock)) + return 0; + + spin_lock(&nm_i->free_nid_list_lock); + list_for_each_entry_safe(i, next, &nm_i->free_nid_list, list) { + if (nr_shrink <= 0 || nm_i->fcnt <= NAT_ENTRY_PER_BLOCK) + break; + if (i->state == NID_ALLOC) + continue; + __del_from_free_nid_list(nm_i, i); + nm_i->fcnt--; + spin_unlock(&nm_i->free_nid_list_lock); + kmem_cache_free(free_nid_slab, i); + nr_shrink--; + spin_lock(&nm_i->free_nid_list_lock); + } + spin_unlock(&nm_i->free_nid_list_lock); + mutex_unlock(&nm_i->build_lock); + + return nr - nr_shrink; +} + void recover_inline_xattr(struct inode *inode, struct page *page) { void *src_addr, *dst_addr; |