diff options
Diffstat (limited to 'fs/f2fs/data.c')
| -rw-r--r-- | fs/f2fs/data.c | 22 |
1 files changed, 18 insertions, 4 deletions
diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c index 5920639ca377..2e54522a8061 100644 --- a/fs/f2fs/data.c +++ b/fs/f2fs/data.c @@ -71,6 +71,9 @@ static int check_extent_cache(struct inode *inode, pgoff_t pgofs, pgoff_t start_fofs, end_fofs; block_t start_blkaddr; + if (is_inode_flag_set(fi, FI_NO_EXTENT)) + return 0; + read_lock(&fi->ext.ext_lock); if (fi->ext.len == 0) { read_unlock(&fi->ext.ext_lock); @@ -109,6 +112,7 @@ void update_extent_cache(block_t blk_addr, struct dnode_of_data *dn) struct f2fs_inode_info *fi = F2FS_I(dn->inode); pgoff_t fofs, start_fofs, end_fofs; block_t start_blkaddr, end_blkaddr; + int need_update = true; f2fs_bug_on(blk_addr == NEW_ADDR); fofs = start_bidx_of_node(ofs_of_node(dn->node_page), fi) + @@ -117,6 +121,9 @@ void update_extent_cache(block_t blk_addr, struct dnode_of_data *dn) /* Update the page address in the parent node */ __set_data_blkaddr(dn, blk_addr); + if (is_inode_flag_set(fi, FI_NO_EXTENT)) + return; + write_lock(&fi->ext.ext_lock); start_fofs = fi->ext.fofs; @@ -163,14 +170,21 @@ void update_extent_cache(block_t blk_addr, struct dnode_of_data *dn) fofs - start_fofs + 1; fi->ext.len -= fofs - start_fofs + 1; } - goto end_update; + } else { + need_update = false; } - write_unlock(&fi->ext.ext_lock); - return; + /* Finally, if the extent is very fragmented, let's drop the cache. */ + if (fi->ext.len < F2FS_MIN_EXTENT_LEN) { + fi->ext.len = 0; + set_inode_flag(fi, FI_NO_EXTENT); + need_update = true; + } end_update: write_unlock(&fi->ext.ext_lock); - sync_inode_page(dn); + if (need_update) + sync_inode_page(dn); + return; } struct page *find_data_page(struct inode *inode, pgoff_t index, bool sync) |