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| author | Jaegeuk Kim <jaegeuk@kernel.org> | 2019-12-10 06:03:05 +0300 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk@kernel.org> | 2020-01-18 03:48:42 +0300 |
| commit | b06af2aff28b41099b0efd4f71c8bb4148bf29b5 (patch) | |
| tree | 7ab6dcdee99b5cedd48185e83b4c2269a8af1c3b /fs/f2fs/dir.c | |
| parent | fe396ad8e7526f059f7b8c7290d33a1b84adacab (diff) | |
| download | linux-b06af2aff28b41099b0efd4f71c8bb4148bf29b5.tar.xz | |
f2fs: convert inline_dir early before starting rename
If we hit an error during rename, we'll get two dentries in different
directories.
Chao adds to check the room in inline_dir which can avoid needless
inversion. This should be done by inode_lock(&old_dir).
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'fs/f2fs/dir.c')
| -rw-r--r-- | fs/f2fs/dir.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/fs/f2fs/dir.c b/fs/f2fs/dir.c index c967cacf979e..b56f6060c1a6 100644 --- a/fs/f2fs/dir.c +++ b/fs/f2fs/dir.c @@ -578,6 +578,20 @@ next: goto next; } +bool f2fs_has_enough_room(struct inode *dir, struct page *ipage, + struct fscrypt_name *fname) +{ + struct f2fs_dentry_ptr d; + unsigned int bit_pos; + int slots = GET_DENTRY_SLOTS(fname_len(fname)); + + make_dentry_ptr_inline(dir, &d, inline_data_addr(dir, ipage)); + + bit_pos = f2fs_room_for_filename(d.bitmap, slots, d.max); + + return bit_pos < d.max; +} + void f2fs_update_dentry(nid_t ino, umode_t mode, struct f2fs_dentry_ptr *d, const struct qstr *name, f2fs_hash_t name_hash, unsigned int bit_pos) |