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| author | Gao Xiang <gaoxiang25@huawei.com> | 2019-02-21 05:57:35 +0100 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk@kernel.org> | 2019-03-13 02:59:18 +0100 |
| commit | 613f3dcdf0d8ffdb3e5d820f6d69076905efddc3 (patch) | |
| tree | 6e2c6064fd05d88875aad04f0bbc4330a4d67924 | |
| parent | f2fs: fix to update iostat correctly in IPU path (diff) | |
| download | linux-613f3dcdf0d8ffdb3e5d820f6d69076905efddc3.tar.xz linux-613f3dcdf0d8ffdb3e5d820f6d69076905efddc3.zip | |
f2fs: no need to take page lock in readdir
VFS will take inode_lock for readdir, therefore no need to
take page lock in readdir at all just as the majority of
other generic filesystems.
This patch improves concurrency since .iterate_shared
was introduced to VFS years ago.
Signed-off-by: Gao Xiang <gaoxiang25@huawei.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
| -rw-r--r-- | fs/f2fs/dir.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/fs/f2fs/dir.c b/fs/f2fs/dir.c index ba7535399d95..103f3686a045 100644 --- a/fs/f2fs/dir.c +++ b/fs/f2fs/dir.c @@ -896,7 +896,7 @@ static int f2fs_readdir(struct file *file, struct dir_context *ctx) page_cache_sync_readahead(inode->i_mapping, ra, file, n, min(npages - n, (pgoff_t)MAX_DIR_RA_PAGES)); - dentry_page = f2fs_get_lock_data_page(inode, n, false); + dentry_page = f2fs_find_data_page(inode, n); if (IS_ERR(dentry_page)) { err = PTR_ERR(dentry_page); if (err == -ENOENT) { @@ -914,11 +914,11 @@ static int f2fs_readdir(struct file *file, struct dir_context *ctx) err = f2fs_fill_dentries(ctx, &d, n * NR_DENTRY_IN_BLOCK, &fstr); if (err) { - f2fs_put_page(dentry_page, 1); + f2fs_put_page(dentry_page, 0); break; } - f2fs_put_page(dentry_page, 1); + f2fs_put_page(dentry_page, 0); } out_free: fscrypt_fname_free_buffer(&fstr); |