diff options
Diffstat (limited to 'fs/f2fs')
| -rw-r--r-- | fs/f2fs/f2fs.h | 1 | ||||
| -rw-r--r-- | fs/f2fs/file.c | 16 | ||||
| -rw-r--r-- | fs/f2fs/inline.c | 26 |
3 files changed, 33 insertions, 10 deletions
diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h index ca7da0464379..147ef316f0ff 100644 --- a/fs/f2fs/f2fs.h +++ b/fs/f2fs/f2fs.h @@ -1763,6 +1763,7 @@ extern struct kmem_cache *inode_entry_slab; */ bool f2fs_may_inline(struct inode *); void read_inline_data(struct page *, struct page *); +bool truncate_inline_inode(struct page *, u64); int f2fs_read_inline_data(struct inode *, struct page *); int f2fs_convert_inline_page(struct dnode_of_data *, struct page *); int f2fs_convert_inline_inode(struct inode *); diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c index 5e8850edc5cc..36dc7581a28b 100644 --- a/fs/f2fs/file.c +++ b/fs/f2fs/file.c @@ -456,15 +456,16 @@ void truncate_data_blocks(struct dnode_of_data *dn) truncate_data_blocks_range(dn, ADDRS_PER_BLOCK); } -static int truncate_partial_data_page(struct inode *inode, u64 from) +static int truncate_partial_data_page(struct inode *inode, u64 from, + bool force) { unsigned offset = from & (PAGE_CACHE_SIZE - 1); struct page *page; - if (!offset) + if (!offset && !force) return 0; - page = find_data_page(inode, from >> PAGE_CACHE_SHIFT, false); + page = find_data_page(inode, from >> PAGE_CACHE_SHIFT, force); if (IS_ERR(page)) return 0; @@ -475,7 +476,8 @@ static int truncate_partial_data_page(struct inode *inode, u64 from) f2fs_wait_on_page_writeback(page, DATA); zero_user(page, offset, PAGE_CACHE_SIZE - offset); - set_page_dirty(page); + if (!force) + set_page_dirty(page); out: f2fs_put_page(page, 1); return 0; @@ -489,6 +491,7 @@ int truncate_blocks(struct inode *inode, u64 from, bool lock) pgoff_t free_from; int count = 0, err = 0; struct page *ipage; + bool truncate_page = false; trace_f2fs_truncate_blocks_enter(inode, from); @@ -504,7 +507,10 @@ int truncate_blocks(struct inode *inode, u64 from, bool lock) } if (f2fs_has_inline_data(inode)) { + if (truncate_inline_inode(ipage, from)) + set_page_dirty(ipage); f2fs_put_page(ipage, 1); + truncate_page = true; goto out; } @@ -535,7 +541,7 @@ out: /* lastly zero out the first data page */ if (!err) - err = truncate_partial_data_page(inode, from); + err = truncate_partial_data_page(inode, from, truncate_page); trace_f2fs_truncate_blocks_exit(inode, err); return err; diff --git a/fs/f2fs/inline.c b/fs/f2fs/inline.c index 4ba97320d194..153c5e7a0bef 100644 --- a/fs/f2fs/inline.c +++ b/fs/f2fs/inline.c @@ -50,10 +50,26 @@ void read_inline_data(struct page *page, struct page *ipage) SetPageUptodate(page); } -static void truncate_inline_data(struct page *ipage) +bool truncate_inline_inode(struct page *ipage, u64 from) { + void *addr; + + /* + * we should never truncate inline data past max inline data size, + * because we always convert inline inode to normal one before + * truncating real data if new size is past max inline data size. + */ + f2fs_bug_on(F2FS_P_SB(ipage), from > MAX_INLINE_DATA); + + if (from >= MAX_INLINE_DATA) + return false; + + addr = inline_data_addr(ipage); + f2fs_wait_on_page_writeback(ipage, NODE); - memset(inline_data_addr(ipage), 0, MAX_INLINE_DATA); + memset(addr + from, 0, MAX_INLINE_DATA - from); + + return true; } int f2fs_read_inline_data(struct inode *inode, struct page *page) @@ -131,7 +147,7 @@ no_update: set_inode_flag(F2FS_I(dn->inode), FI_APPEND_WRITE); /* clear inline data and flag after data writeback */ - truncate_inline_data(dn->inode_page); + truncate_inline_inode(dn->inode_page, 0); clear_out: stat_dec_inline_inode(dn->inode); f2fs_clear_inline_inode(dn->inode); @@ -245,7 +261,7 @@ process_inline: if (f2fs_has_inline_data(inode)) { ipage = get_node_page(sbi, inode->i_ino); f2fs_bug_on(sbi, IS_ERR(ipage)); - truncate_inline_data(ipage); + truncate_inline_inode(ipage, 0); f2fs_clear_inline_inode(inode); update_inode(inode, ipage); f2fs_put_page(ipage, 1); @@ -363,7 +379,7 @@ static int f2fs_convert_inline_dir(struct inode *dir, struct page *ipage, set_page_dirty(page); /* clear inline dir and flag after data writeback */ - truncate_inline_data(ipage); + truncate_inline_inode(ipage, 0); stat_dec_inline_dir(dir); clear_inode_flag(F2FS_I(dir), FI_INLINE_DENTRY); |