diff options
Diffstat (limited to 'fs/ext4/inode.c')
-rw-r--r-- | fs/ext4/inode.c | 13 |
1 files changed, 8 insertions, 5 deletions
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c index 31604907af..537803250c 100644 --- a/fs/ext4/inode.c +++ b/fs/ext4/inode.c @@ -465,9 +465,10 @@ static void ext4_map_blocks_es_recheck(handle_t *handle, * Otherwise, call with ext4_ind_map_blocks() to handle indirect mapping * based files * - * On success, it returns the number of blocks being mapped or allocated. if - * create==0 and the blocks are pre-allocated and unwritten, the resulting @map - * is marked as unwritten. If the create == 1, it will mark @map as mapped. + * On success, it returns the number of blocks being mapped or allocated. + * If flags doesn't contain EXT4_GET_BLOCKS_CREATE the blocks are + * pre-allocated and unwritten, the resulting @map is marked as unwritten. + * If the flags contain EXT4_GET_BLOCKS_CREATE, it will mark @map as mapped. * * It returns 0 if plain look up failed (blocks have not been allocated), in * that case, @map is returned as unmapped but we still do fill map->m_len to @@ -589,8 +590,7 @@ found: * Returns if the blocks have already allocated * * Note that if blocks have been preallocated - * ext4_ext_get_block() returns the create = 0 - * with buffer head unmapped. + * ext4_ext_map_blocks() returns with buffer head unmapped */ if (retval > 0 && map->m_flags & EXT4_MAP_MAPPED) /* @@ -2887,6 +2887,9 @@ retry: if (IS_ERR(folio)) return PTR_ERR(folio); + /* In case writeback began while the folio was unlocked */ + folio_wait_stable(folio); + #ifdef CONFIG_FS_ENCRYPTION ret = ext4_block_write_begin(folio, pos, len, ext4_da_get_block_prep); #else |