From d0abb36db44faaf8f8aa148ca206fe2404042dec Mon Sep 17 00:00:00 2001 From: Theodore Ts'o Date: Sun, 13 Nov 2016 22:02:28 -0500 Subject: [PATCH] ext4: allow ext4_ext_truncate() to return an error Return errors to the caller instead of declaring the file system corrupted. Signed-off-by: Theodore Ts'o Reviewed-by: Jan Kara --- fs/ext4/ext4.h | 2 +- fs/ext4/extents.c | 15 +++++++-------- fs/ext4/inode.c | 4 +++- 3 files changed, 11 insertions(+), 10 deletions(-) diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h index be2282dcde7d..54211c7876f8 100644 --- a/fs/ext4/ext4.h +++ b/fs/ext4/ext4.h @@ -3128,7 +3128,7 @@ extern int ext4_ext_writepage_trans_blocks(struct inode *, int); extern int ext4_ext_index_trans_blocks(struct inode *inode, int extents); extern int ext4_ext_map_blocks(handle_t *handle, struct inode *inode, struct ext4_map_blocks *map, int flags); -extern void ext4_ext_truncate(handle_t *, struct inode *); +extern int ext4_ext_truncate(handle_t *, struct inode *); extern int ext4_ext_remove_space(struct inode *inode, ext4_lblk_t start, ext4_lblk_t end); extern void ext4_ext_init(struct super_block *); diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c index c930a0110fb4..d3b119499c53 100644 --- a/fs/ext4/extents.c +++ b/fs/ext4/extents.c @@ -4631,7 +4631,7 @@ out2: return err ? err : allocated; } -void ext4_ext_truncate(handle_t *handle, struct inode *inode) +int ext4_ext_truncate(handle_t *handle, struct inode *inode) { struct super_block *sb = inode->i_sb; ext4_lblk_t last_block; @@ -4645,7 +4645,9 @@ void ext4_ext_truncate(handle_t *handle, struct inode *inode) /* we have to know where to truncate from in crash case */ EXT4_I(inode)->i_disksize = inode->i_size; - ext4_mark_inode_dirty(handle, inode); + err = ext4_mark_inode_dirty(handle, inode); + if (err) + return err; last_block = (inode->i_size + sb->s_blocksize - 1) >> EXT4_BLOCK_SIZE_BITS(sb); @@ -4657,12 +4659,9 @@ retry: congestion_wait(BLK_RW_ASYNC, HZ/50); goto retry; } - if (err) { - ext4_std_error(inode->i_sb, err); - return; - } - err = ext4_ext_remove_space(inode, last_block, EXT_MAX_BLOCKS - 1); - ext4_std_error(inode->i_sb, err); + if (err) + return err; + return ext4_ext_remove_space(inode, last_block, EXT_MAX_BLOCKS - 1); } static int ext4_alloc_file_blocks(struct file *file, ext4_lblk_t offset, diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c index 585153057c2a..79f46f4b43b8 100644 --- a/fs/ext4/inode.c +++ b/fs/ext4/inode.c @@ -4173,11 +4173,13 @@ int ext4_truncate(struct inode *inode) ext4_discard_preallocations(inode); if (ext4_test_inode_flag(inode, EXT4_INODE_EXTENTS)) - ext4_ext_truncate(handle, inode); + err = ext4_ext_truncate(handle, inode); else ext4_ind_truncate(handle, inode); up_write(&ei->i_data_sem); + if (err) + goto out_stop; if (IS_SYNC(inode)) ext4_handle_sync(handle); -- 2.39.5