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| author | Chao Yu <yuchao0@huawei.com> | 2018-09-07 13:49:07 +0200 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk@kernel.org> | 2018-09-12 02:09:32 +0200 |
| commit | e1293bdfa01dbde03d9ac15b7ceea71ba10b89c3 (patch) | |
| tree | f946738703305e48dabe43c89633e0169e08fde1 | |
| parent | f2fs: fix to do sanity check with current segment number (diff) | |
| download | linux-e1293bdfa01dbde03d9ac15b7ceea71ba10b89c3.tar.xz linux-e1293bdfa01dbde03d9ac15b7ceea71ba10b89c3.zip | |
f2fs: plug readahead IO in readdir()
Add a plug to merge readahead IO in readdir(), expecting it can
reduce bio count before submitting to block layer.
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
| -rw-r--r-- | fs/f2fs/dir.c | 22 |
1 files changed, 16 insertions, 6 deletions
diff --git a/fs/f2fs/dir.c b/fs/f2fs/dir.c index ecc3a4e2be96..bd0348cc860f 100644 --- a/fs/f2fs/dir.c +++ b/fs/f2fs/dir.c @@ -784,9 +784,15 @@ int f2fs_fill_dentries(struct dir_context *ctx, struct f2fs_dentry_ptr *d, struct f2fs_dir_entry *de = NULL; struct fscrypt_str de_name = FSTR_INIT(NULL, 0); struct f2fs_sb_info *sbi = F2FS_I_SB(d->inode); + struct blk_plug plug; + bool readdir_ra = sbi->readdir_ra == 1; + int err = 0; bit_pos = ((unsigned long)ctx->pos % d->max); + if (readdir_ra) + blk_start_plug(&plug); + while (bit_pos < d->max) { bit_pos = find_next_bit_le(d->bitmap, d->max, bit_pos); if (bit_pos >= d->max) @@ -806,29 +812,33 @@ int f2fs_fill_dentries(struct dir_context *ctx, struct f2fs_dentry_ptr *d, if (f2fs_encrypted_inode(d->inode)) { int save_len = fstr->len; - int err; err = fscrypt_fname_disk_to_usr(d->inode, (u32)de->hash_code, 0, &de_name, fstr); if (err) - return err; + goto out; de_name = *fstr; fstr->len = save_len; } if (!dir_emit(ctx, de_name.name, de_name.len, - le32_to_cpu(de->ino), d_type)) - return 1; + le32_to_cpu(de->ino), d_type)) { + err = 1; + goto out; + } - if (sbi->readdir_ra == 1) + if (readdir_ra) f2fs_ra_node_page(sbi, le32_to_cpu(de->ino)); bit_pos += GET_DENTRY_SLOTS(le16_to_cpu(de->name_len)); ctx->pos = start_pos + bit_pos; } - return 0; +out: + if (readdir_ra) + blk_finish_plug(&plug); + return err; } static int f2fs_readdir(struct file *file, struct dir_context *ctx) |