diff options
-rw-r--r-- | fs/f2fs/dir.c | 6 | ||||
-rw-r--r-- | fs/f2fs/f2fs.h | 2 |
2 files changed, 8 insertions, 0 deletions
diff --git a/fs/f2fs/dir.c b/fs/f2fs/dir.c index 972fd0ef230f..3581c2bde21b 100644 --- a/fs/f2fs/dir.c +++ b/fs/f2fs/dir.c @@ -637,11 +637,17 @@ static int f2fs_readdir(struct file *file, struct dir_context *ctx) struct f2fs_dentry_block *dentry_blk = NULL; struct f2fs_dir_entry *de = NULL; struct page *dentry_page = NULL; + struct file_ra_state *ra = &file->f_ra; unsigned int n = ((unsigned long)ctx->pos / NR_DENTRY_IN_BLOCK); unsigned char d_type = DT_UNKNOWN; bit_pos = ((unsigned long)ctx->pos % NR_DENTRY_IN_BLOCK); + /* readahead for multi pages of dir */ + if (npages - n > 1 && !ra_has_index(ra, n)) + page_cache_sync_readahead(inode->i_mapping, ra, file, n, + min(npages - n, (pgoff_t)MAX_DIR_RA_PAGES)); + for (; n < npages; n++) { dentry_page = get_lock_data_page(inode, n); if (IS_ERR(dentry_page)) diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h index e77be7cb1e60..2b67679f88b6 100644 --- a/fs/f2fs/f2fs.h +++ b/fs/f2fs/f2fs.h @@ -182,6 +182,8 @@ enum { #define F2FS_LINK_MAX 32000 /* maximum link count per file */ +#define MAX_DIR_RA_PAGES 4 /* maximum ra pages of dir */ + /* for in-memory extent cache entry */ #define F2FS_MIN_EXTENT_LEN 16 /* minimum extent length */ |