diff options
| -rw-r--r-- | fs/ext4/ext4.h | 24 | ||||
| -rw-r--r-- | fs/ext4/ext4_extents.h | 22 | ||||
| -rw-r--r-- | fs/ext4/extents.c | 222 | ||||
| -rw-r--r-- | fs/ext4/extents_status.c | 2 | ||||
| -rw-r--r-- | fs/ext4/file.c | 150 | ||||
| -rw-r--r-- | fs/ext4/inode.c | 25 | ||||
| -rw-r--r-- | fs/ext4/move_extent.c | 38 | ||||
| -rw-r--r-- | fs/ext4/super.c | 2 | ||||
| -rw-r--r-- | include/trace/events/ext4.h | 9 |
9 files changed, 244 insertions, 250 deletions
diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h index 9334f55dab6f..eb37d76bf911 100644 --- a/fs/ext4/ext4.h +++ b/fs/ext4/ext4.h @@ -158,7 +158,6 @@ struct ext4_allocation_request { #define EXT4_MAP_MAPPED (1 << BH_Mapped) #define EXT4_MAP_UNWRITTEN (1 << BH_Unwritten) #define EXT4_MAP_BOUNDARY (1 << BH_Boundary) -#define EXT4_MAP_UNINIT (1 << BH_Uninit) /* Sometimes (in the bigalloc case, from ext4_da_get_block_prep) the caller of * ext4_map_blocks wants to know whether or not the underlying cluster has * already been accounted for. EXT4_MAP_FROM_CLUSTER conveys to the caller that @@ -169,7 +168,7 @@ struct ext4_allocation_request { #define EXT4_MAP_FROM_CLUSTER (1 << BH_AllocFromCluster) #define EXT4_MAP_FLAGS (EXT4_MAP_NEW | EXT4_MAP_MAPPED |\ EXT4_MAP_UNWRITTEN | EXT4_MAP_BOUNDARY |\ - EXT4_MAP_UNINIT | EXT4_MAP_FROM_CLUSTER) + EXT4_MAP_FROM_CLUSTER) struct ext4_map_blocks { ext4_fsblk_t m_pblk; @@ -184,7 +183,7 @@ struct ext4_map_blocks { #define EXT4_IO_END_UNWRITTEN 0x0001 /* - * For converting uninitialized extents on a work queue. 'handle' is used for + * For converting unwritten extents on a work queue. 'handle' is used for * buffered writeback. */ typedef struct ext4_io_end { @@ -537,26 +536,26 @@ enum { /* * Flags used by ext4_map_blocks() */ - /* Allocate any needed blocks and/or convert an unitialized + /* Allocate any needed blocks and/or convert an unwritten extent to be an initialized ext4 */ #define EXT4_GET_BLOCKS_CREATE 0x0001 - /* Request the creation of an unitialized extent */ -#define EXT4_GET_BLOCKS_UNINIT_EXT 0x0002 -#define EXT4_GET_BLOCKS_CREATE_UNINIT_EXT (EXT4_GET_BLOCKS_UNINIT_EXT|\ + /* Request the creation of an unwritten extent */ +#define EXT4_GET_BLOCKS_UNWRIT_EXT 0x0002 +#define EXT4_GET_BLOCKS_CREATE_UNWRIT_EXT (EXT4_GET_BLOCKS_UNWRIT_EXT|\ EXT4_GET_BLOCKS_CREATE) /* Caller is from the delayed allocation writeout path * finally doing the actual allocation of delayed blocks */ #define EXT4_GET_BLOCKS_DELALLOC_RESERVE 0x0004 /* caller is from the direct IO path, request to creation of an - unitialized extents if not allocated, split the uninitialized + unwritten extents if not allocated, split the unwritten extent if blocks has been preallocated already*/ #define EXT4_GET_BLOCKS_PRE_IO 0x0008 #define EXT4_GET_BLOCKS_CONVERT 0x0010 #define EXT4_GET_BLOCKS_IO_CREATE_EXT (EXT4_GET_BLOCKS_PRE_IO|\ - EXT4_GET_BLOCKS_CREATE_UNINIT_EXT) + EXT4_GET_BLOCKS_CREATE_UNWRIT_EXT) /* Convert extent to initialized after IO complete */ #define EXT4_GET_BLOCKS_IO_CONVERT_EXT (EXT4_GET_BLOCKS_CONVERT|\ - EXT4_GET_BLOCKS_CREATE_UNINIT_EXT) + EXT4_GET_BLOCKS_CREATE_UNWRIT_EXT) /* Eventual metadata allocation (due to growing extent tree) * should not fail, so try to use reserved blocks for that.*/ #define EXT4_GET_BLOCKS_METADATA_NOFAIL 0x0020 @@ -2783,10 +2782,9 @@ extern int ext4_mmp_csum_verify(struct super_block *sb, * See EXT4_MAP_... to see where this is used. */ enum ext4_state_bits { - BH_Uninit /* blocks are allocated but uninitialized on disk */ - = BH_JBDPrivateStart, - BH_AllocFromCluster, /* allocated blocks were part of already + BH_AllocFromCluster /* allocated blocks were part of already * allocated cluster. */ + = BH_JBDPrivateStart }; /* diff --git a/fs/ext4/ext4_extents.h b/fs/ext4/ext4_extents.h index 5074fe23f19e..a867f5ca9991 100644 --- a/fs/ext4/ext4_extents.h +++ b/fs/ext4/ext4_extents.h @@ -137,21 +137,21 @@ struct ext4_ext_path { * EXT_INIT_MAX_LEN is the maximum number of blocks we can have in an * initialized extent. This is 2^15 and not (2^16 - 1), since we use the * MSB of ee_len field in the extent datastructure to signify if this - * particular extent is an initialized extent or an uninitialized (i.e. + * particular extent is an initialized extent or an unwritten (i.e. * preallocated). - * EXT_UNINIT_MAX_LEN is the maximum number of blocks we can have in an - * uninitialized extent. + * EXT_UNWRITTEN_MAX_LEN is the maximum number of blocks we can have in an + * unwritten extent. * If ee_len is <= 0x8000, it is an initialized extent. Otherwise, it is an - * uninitialized one. In other words, if MSB of ee_len is set, it is an - * uninitialized extent with only one special scenario when ee_len = 0x8000. - * In this case we can not have an uninitialized extent of zero length and + * unwritten one. In other words, if MSB of ee_len is set, it is an + * unwritten extent with only one special scenario when ee_len = 0x8000. + * In this case we can not have an unwritten extent of zero length and * thus we make it as a special case of initialized extent with 0x8000 length. * This way we get better extent-to-group alignment for initialized extents. * Hence, the maximum number of blocks we can have in an *initialized* - * extent is 2^15 (32768) and in an *uninitialized* extent is 2^15-1 (32767). + * extent is 2^15 (32768) and in an *unwritten* extent is 2^15-1 (32767). */ #define EXT_INIT_MAX_LEN (1UL << 15) -#define EXT_UNINIT_MAX_LEN (EXT_INIT_MAX_LEN - 1) +#define EXT_UNWRITTEN_MAX_LEN (EXT_INIT_MAX_LEN - 1) #define EXT_FIRST_EXTENT(__hdr__) \ @@ -187,14 +187,14 @@ static inline unsigned short ext_depth(struct inode *inode) return le16_to_cpu(ext_inode_hdr(inode)->eh_depth); } -static inline void ext4_ext_mark_uninitialized(struct ext4_extent *ext) +static inline void ext4_ext_mark_unwritten(struct ext4_extent *ext) { - /* We can not have an uninitialized extent of zero length! */ + /* We can not have an unwritten extent of zero length! */ BUG_ON((le16_to_cpu(ext->ee_len) & ~EXT_INIT_MAX_LEN) == 0); ext->ee_len |= cpu_to_le16(EXT_INIT_MAX_LEN); } -static inline int ext4_ext_is_uninitialized(struct ext4_extent *ext) +static inline int ext4_ext_is_unwritten(struct ext4_extent *ext) { /* Extent with ee_len of 0x8000 is treated as an initialized extent */ return (le16_to_cpu(ext->ee_len) > EXT_INIT_MAX_LEN); diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c index 01b0c208f625..e305a31641f2 100644 --- a/fs/ext4/extents.c +++ b/fs/ext4/extents.c @@ -50,8 +50,8 @@ */ #define EXT4_EXT_MAY_ZEROOUT 0x1 /* safe to zeroout if split fails \ due to ENOSPC */ -#define EXT4_EXT_MARK_UNINIT1 0x2 /* mark first half uninitialized */ -#define EXT4_EXT_MARK_UNINIT2 0x4 /* mark second half uninitialized */ +#define EXT4_EXT_MARK_UNWRIT1 0x2 /* mark first half unwritten */ +#define EXT4_EXT_MARK_UNWRIT2 0x4 /* mark second half unwritten */ #define EXT4_EXT_DATA_VALID1 0x8 /* first half contains valid data */ #define EXT4_EXT_DATA_VALID2 0x10 /* second half contains valid data */ @@ -524,7 +524,7 @@ __read_extent_tree_block(const char *function, unsigned int line, lblk - prev, ~0, EXTENT_STATUS_HOLE); - if (ext4_ext_is_uninitialized(ex)) + if (ext4_ext_is_unwritten(ex)) status = EXTENT_STATUS_UNWRITTEN; ext4_es_cache_extent(inode, lblk, len, ext4_ext_pblock(ex), status); @@ -620,7 +620,7 @@ static void ext4_ext_show_path(struct inode *inode, struct ext4_ext_path *path) } else if (path->p_ext) { ext_debug(" %d:[%d]%d:%llu ", le32_to_cpu(path->p_ext->ee_block), - ext4_ext_is_uninitialized(path->p_ext), + ext4_ext_is_unwritten(path->p_ext), ext4_ext_get_actual_len(path->p_ext), ext4_ext_pblock(path->p_ext)); } else @@ -646,7 +646,7 @@ static void ext4_ext_show_leaf(struct inode *inode, struct ext4_ext_path *path) for (i = 0; i < le16_to_cpu(eh->eh_entries); i++, ex++) { ext_debug("%d:[%d]%d:%llu ", le32_to_cpu(ex->ee_block), - ext4_ext_is_uninitialized(ex), + ext4_ext_is_unwritten(ex), ext4_ext_get_actual_len(ex), ext4_ext_pblock(ex)); } ext_debug("\n"); @@ -677,7 +677,7 @@ static void ext4_ext_show_move(struct inode *inode, struct ext4_ext_path *path, ext_debug("move %d:%llu:[%d]%d in new leaf %llu\n", le32_to_cpu(ex->ee_block), ext4_ext_pblock(ex), - ext4_ext_is_uninitialized(ex), + ext4_ext_is_unwritten(ex), ext4_ext_get_actual_len(ex), newblock); ex++; @@ -802,7 +802,7 @@ ext4_ext_binsearch(struct inode *inode, ext_debug(" -> %d:%llu:[%d]%d ", le32_to_cpu(path->p_ext->ee_block), ext4_ext_pblock(path->p_ext), - ext4_ext_is_uninitialized(path->p_ext), + ext4_ext_is_unwritten(path->p_ext), ext4_ext_get_actual_len(path->p_ext)); #ifdef CHECK_BINSEARCH @@ -1686,11 +1686,11 @@ ext4_can_extents_be_merged(struct inode *inode, struct ext4_extent *ex1, /* * Make sure that both extents are initialized. We don't merge - * uninitialized extents so that we can be sure that end_io code has + * unwritten extents so that we can be sure that end_io code has * the extent that was written properly split out and conversion to * initialized is trivial. */ - if (ext4_ext_is_uninitialized(ex1) != ext4_ext_is_uninitialized(ex2)) + if (ext4_ext_is_unwritten(ex1) != ext4_ext_is_unwritten(ex2)) return 0; ext1_ee_len = ext4_ext_get_actual_len(ex1); @@ -1707,10 +1707,10 @@ ext4_can_extents_be_merged(struct inode *inode, struct ext4_extent *ex1, */ if (ext1_ee_len + ext2_ee_len > EXT_INIT_MAX_LEN) return 0; - if (ext4_ext_is_uninitialized(ex1) && + if (ext4_ext_is_unwritten(ex1) && (ext4_test_inode_state(inode, EXT4_STATE_DIO_UNWRITTEN) || atomic_read(&EXT4_I(inode)->i_unwritten) || - (ext1_ee_len + ext2_ee_len > EXT_UNINIT_MAX_LEN))) + (ext1_ee_len + ext2_ee_len > EXT_UNWRITTEN_MAX_LEN))) return 0; #ifdef AGGRESSIVE_TEST if (ext1_ee_len >= 4) @@ -1735,7 +1735,7 @@ static int ext4_ext_try_to_merge_right(struct inode *inode, { struct ext4_extent_header *eh; unsigned int depth, len; - int merge_done = 0, uninit; + int merge_done = 0, unwritten; depth = ext_depth(inode); BUG_ON(path[depth].p_hdr == NULL); @@ -1745,11 +1745,11 @@ static int ext4_ext_try_to_merge_right(struct inode *inode, if (!ext4_can_extents_be_merged(inode, ex, ex + 1)) break; /* merge with next extent! */ - uninit = ext4_ext_is_uninitialized(ex); + unwritten = ext4_ext_is_unwritten(ex); ex->ee_len = cpu_to_le16(ext4_ext_get_actual_len(ex) + ext4_ext_get_actual_len(ex + 1)); - if (uninit) - ext4_ext_mark_uninitialized(ex); + if (unwritten) + ext4_ext_mark_unwritten(ex); if (ex + 1 < EXT_LAST_EXTENT(eh)) { len = (EXT_LAST_EXTENT(eh) - ex - 1) @@ -1903,7 +1903,7 @@ int ext4_ext_insert_extent(handle_t *handle, struct inode *inode, struct ext4_ext_path *npath = NULL; int depth, len, err; ext4_lblk_t next; - int mb_flags = 0, uninit; + int mb_flags = 0, unwritten; if (unlikely(ext4_ext_get_actual_len(newext) == 0)) { EXT4_ERROR_INODE(inode, "ext4_ext_get_actual_len(newext) == 0"); @@ -1943,21 +1943,21 @@ int ext4_ext_insert_extent(handle_t *handle, struct inode *inode, if (ext4_can_extents_be_merged(inode, ex, newext)) { ext_debug("append [%d]%d block to %u:[%d]%d" "(from %llu)\n", - ext4_ext_is_uninitialized(newext), + ext4_ext_is_unwritten(newext), ext4_ext_get_actual_len(newext), le32_to_cpu(ex->ee_block), - ext4_ext_is_uninitialized(ex), + ext4_ext_is_unwritten(ex), ext4_ext_get_actual_len(ex), ext4_ext_pblock(ex)); err = ext4_ext_get_access(handle, inode, path + depth); if (err) return err; - uninit = ext4_ext_is_uninitialized(ex); + unwritten = ext4_ext_is_unwritten(ex); ex->ee_len = cpu_to_le16(ext4_ext_get_actual_len(ex) + ext4_ext_get_actual_len(newext)); - if (uninit) - ext4_ext_mark_uninitialized(ex); + if (unwritten) + ext4_ext_mark_unwritten(ex); eh = path[depth].p_hdr; nearex = ex; goto merge; @@ -1969,10 +1969,10 @@ prepend: ext_debug("prepend %u[%d]%d block to %u:[%d]%d" "(from %llu)\n", le32_to_cpu(newext->ee_block), - ext4_ext_is_uninitialized(newext), + ext4_ext_is_unwritten(newext), ext4_ext_get_actual_len(newext), le32_to_cpu(ex->ee_block), - ext4_ext_is_uninitialized(ex), + ext4_ext_is_unwritten(ex), ext4_ext_get_actual_len(ex), ext4_ext_pblock(ex)); err = ext4_ext_get_access(handle, inode, @@ -1980,13 +1980,13 @@ prepend: if (err) return err; - uninit = ext4_ext_is_uninitialized(ex); + unwritten = ext4_ext_is_unwritten(ex); ex->ee_block = newext->ee_block; ext4_ext_store_pblock(ex, ext4_ext_pblock(newext)); ex->ee_len = cpu_to_le16(ext4_ext_get_actual_len(ex) + ext4_ext_get_actual_len(newext)); - if (uninit) - ext4_ext_mark_uninitialized(ex); + if (unwritten) + ext4_ext_mark_unwritten(ex); eh = path[depth].p_hdr; nearex = ex; goto merge; @@ -2046,7 +2046,7 @@ has_space: ext_debug("first extent in the leaf: %u:%llu:[%d]%d\n", le32_to_cpu(newext->ee_block), ext4_ext_pblock(newext), - ext4_ext_is_uninitialized(newext), + ext4_ext_is_unwritten(newext), ext4_ext_get_actual_len(newext)); nearex = EXT_FIRST_EXTENT(eh); } else { @@ -2057,7 +2057,7 @@ has_space: "nearest %p\n", le32_to_cpu(newext->ee_block), ext4_ext_pblock(newext), - ext4_ext_is_uninitialized(newext), + ext4_ext_is_unwritten(newext), ext4_ext_get_actual_len(newext), nearex); nearex++; @@ -2068,7 +2068,7 @@ has_space: "nearest %p\n", le32_to_cpu(newext->ee_block), ext4_ext_pblock(newext), - ext4_ext_is_uninitialized(newext), + ext4_ext_is_unwritten(newext), ext4_ext_get_actual_len(newext), nearex); } @@ -2078,7 +2078,7 @@ has_space: "move %d extents from 0x%p to 0x%p\n", le32_to_cpu(newext->ee_block), ext4_ext_pblock(newext), - ext4_ext_is_uninitialized(newext), + ext4_ext_is_unwritten(newext), ext4_ext_get_actual_len(newext), len, nearex, nearex + 1); memmove(nearex + 1, nearex, @@ -2200,7 +2200,7 @@ static int ext4_fill_fiemap_extents(struct inode *inode, es.es_lblk = le32_to_cpu(ex->ee_block); es.es_len = ext4_ext_get_actual_len(ex); es.es_pblk = ext4_ext_pblock(ex); - if (ext4_ext_is_uninitialized(ex)) + if (ext4_ext_is_unwritten(ex)) flags |= FIEMAP_EXTENT_UNWRITTEN; } @@ -2576,7 +2576,7 @@ ext4_ext_rm_leaf(handle_t *handle, struct inode *inode, unsigned num; ext4_lblk_t ex_ee_block; unsigned short ex_ee_len; - unsigned uninitialized = 0; + unsigned unwritten = 0; struct ext4_extent *ex; ext4_fsblk_t pblk; @@ -2623,13 +2623,13 @@ ext4_ext_rm_leaf(handle_t *handle, struct inode *inode, while (ex >= EXT_FIRST_EXTENT(eh) && ex_ee_block + ex_ee_len > start) { - if (ext4_ext_is_uninitialized(ex)) - uninitialized = 1; + if (ext4_ext_is_unwritten(ex)) + unwritten = 1; else - uninitialized = 0; + unwritten = 0; ext_debug("remove ext %u:[%d]%d\n", ex_ee_block, - uninitialized, ex_ee_len); + unwritten, ex_ee_len); path[depth].p_ext = ex; a = ex_ee_block > start ? ex_ee_block : start; @@ -2701,11 +2701,11 @@ ext4_ext_rm_leaf(handle_t *handle, struct inode *inode, ex->ee_len = cpu_to_le16(num); /* - * Do not mark uninitialized if all the blocks in the + * Do not mark unwritten if all the blocks in the * extent have been removed. */ - if (uninitialized && num) - ext4_ext_mark_uninitialized(ex); + if (unwritten && num) + ext4_ext_mark_unwritten(ex); /* * If the extent was completely released, * we need to remove it from the leaf @@ -2854,9 +2854,9 @@ again: end < ee_block + ext4_ext_get_actual_len(ex) - 1) { int split_flag = 0; - if (ext4_ext_is_uninitialized(ex)) - split_flag = EXT4_EXT_MARK_UNINIT1 | - EXT4_EXT_MARK_UNINIT2; + if (ext4_ext_is_unwritten(ex)) + split_flag = EXT4_EXT_MARK_UNWRIT1 | + EXT4_EXT_MARK_UNWRIT2; /* * Split the extent in two so that 'end' is the last @@ -3113,7 +3113,7 @@ static int ext4_ext_zeroout(struct inode *inode, struct ext4_extent *ex) * @path: the path to the extent * @split: the logical block where the extent is splitted. * @split_flags: indicates if the extent could be zeroout if split fails, and - * the states(init or uninit) of new extents. + * the states(init or unwritten) of new extents. * @flags: flags used to insert new extent to extent tree. * * @@ -3155,10 +3155,10 @@ static int ext4_split_extent_at(handle_t *handle, newblock = split - ee_block + ext4_ext_pblock(ex); BUG_ON(split < ee_block || split >= (ee_block + ee_len)); - BUG_ON(!ext4_ext_is_uninitialized(ex) && + BUG_ON(!ext4_ext_is_unwritten(ex) && split_flag & (EXT4_EXT_MAY_ZEROOUT | - EXT4_EXT_MARK_UNINIT1 | - EXT4_EXT_MARK_UNINIT2)); + EXT4_EXT_MARK_UNWRIT1 | + EXT4_EXT_MARK_UNWRIT2)); err = ext4_ext_get_access(handle, inode, path + depth); if (err) @@ -3170,8 +3170,8 @@ static int ext4_split_extent_at(handle_t *handle, * then we just change the state of the extent, and splitting * is not needed. */ - if (split_flag & EXT4_EXT_MARK_UNINIT2) - ext4_ext_mark_uninitialized(ex); + if (split_flag & EXT4_EXT_MARK_UNWRIT2) + ext4_ext_mark_unwritten(ex); else ext4_ext_mark_initialized(ex); @@ -3185,8 +3185,8 @@ static int ext4_split_extent_at(handle_t *handle, /* case a */ memcpy(&orig_ex, ex, sizeof(orig_ex)); ex->ee_len = cpu_to_le16(split - ee_block); - if (split_flag & EXT4_EXT_MARK_UNINIT1) - ext4_ext_mark_uninitialized(ex); + if (split_flag & EXT4_EXT_MARK_UNWRIT1) + ext4_ext_mark_unwritten(ex); /* * path may lead to new leaf, not to original leaf any more @@ -3200,8 +3200,8 @@ static int ext4_split_extent_at(handle_t *handle, ex2->ee_block = cpu_to_le32(split); ex2->ee_len = cpu_to_le16(ee_len - (split - ee_block)); ext4_ext_store_pblock(ex2, newblock); - if (split_flag & EXT4_EXT_MARK_UNINIT2) - ext4_ext_mark_uninitialized(ex2); + if (split_flag & EXT4_EXT_MARK_UNWRIT2) + ext4_ext_mark_unwritten(ex2); err = ext4_ext_insert_extent(handle, inode, path, &newex, flags); if (err == -ENOSPC && (EXT4_EXT_MAY_ZEROOUT & split_flag)) { @@ -3278,7 +3278,7 @@ static int ext4_split_extent(handle_t *handle, struct ext4_extent *ex; unsigned int ee_len, depth; int err = 0; - int uninitialized; + int unwritten; int split_flag1, flags1; int allocated = map->m_len; @@ -3286,14 +3286,14 @@ static int ext4_split_extent(handle_t *handle, ex = path[depth].p_ext; ee_block = le32_to_cpu(ex->ee_block); ee_len = ext4_ext_get_actual_len(ex); - uninitialized = ext4_ext_is_uninitialized(ex); + unwritten = ext4_ext_is_unwritten(ex); if (map->m_lblk + map->m_len < ee_block + ee_len) { split_flag1 = split_flag & EXT4_EXT_MAY_ZEROOUT; flags1 = flags | EXT4_GET_BLOCKS_PRE_IO; - if (uninitialized) - split_flag1 |= EXT4_EXT_MARK_UNINIT1 | - EXT4_EXT_MARK_UNINIT2; + if (unwritten) + split_flag1 |= EXT4_EXT_MARK_UNWRIT1 | + EXT4_EXT_MARK_UNWRIT2; if (split_flag & EXT4_EXT_DATA_VALID2) split_flag1 |= EXT4_EXT_DATA_VALID1; err = ext4_split_extent_at(handle, inode, path, @@ -3318,15 +3318,15 @@ static int ext4_split_extent(handle_t *handle, (unsigned long) map->m_lblk); return -EIO; } - uninitialized = ext4_ext_is_uninitialized(ex); + unwritten = ext4_ext_is_unwritten(ex); split_flag1 = 0; if (map->m_lblk >= ee_block) { split_flag1 = split_flag & EXT4_EXT_DATA_VALID2; - if (uninitialized) { - split_flag1 |= EXT4_EXT_MARK_UNINIT1; + if (unwritten) { + split_flag1 |= EXT4_EXT_MARK_UNWRIT1; split_flag1 |= split_flag & (EXT4_EXT_MAY_ZEROOUT | - EXT4_EXT_MARK_UNINIT2); + EXT4_EXT_MARK_UNWRIT2); } err = ext4_split_extent_at(handle, inode, path, map->m_lblk, split_flag1, flags); @@ -3341,16 +3341,16 @@ out: /* * This function is called by ext4_ext_map_blocks() if someone tries to write - * to an uninitialized extent. It may result in splitting the uninitialized + * to an unwritten extent. It may result in splitting the unwritten * extent into multiple extents (up to three - one initialized and two - * uninitialized). + * unwritten). * There are three possibilities: * a> There is no split required: Entire extent should be initialized * b> Splits in two extents: Write is happening at either end of the extent * c> Splits in three extents: Somone is writing in middle of the extent * * Pre-conditions: - * - The extent pointed to by 'path' is uninitialized. + * - The extent pointed to by 'path' is unwritten. * - The extent pointed to by 'path' contains a superset * of the logical span [map->m_lblk, map->m_lblk + map->m_len). * @@ -3396,12 +3396,12 @@ static int ext4_ext_convert_to_initialized(handle_t *handle, trace_ext4_ext_convert_to_initialized_enter(inode, map, ex); /* Pre-conditions */ - BUG_ON(!ext4_ext_is_uninitialized(ex)); + BUG_ON(!ext4_ext_is_unwritten(ex)); BUG_ON(!in_range(map->m_lblk, ee_block, ee_len)); /* * Attempt to transfer newly initialized blocks from the currently - * uninitialized extent to its neighbor. This is much cheaper + * unwritten extent to its neighbor. This is much cheaper * than an insertion followed by a merge as those involve costly * memmove() calls. Transferring to the left is the common case in * steady state for workloads doing fallocate(FALLOC_FL_KEEP_SIZE) @@ -3437,7 +3437,7 @@ static int ext4_ext_convert_to_initialized(handle_t *handle, * - C4: abut_ex can receive the additional blocks without * overflowing the (initialized) length limit. */ - if ((!ext4_ext_is_uninitialized(abut_ex)) && /*C1*/ + if ((!ext4_ext_is_unwritten(abut_ex)) && /*C1*/ ((prev_lblk + prev_len) == ee_block) && /*C2*/ ((prev_pblk + prev_len) == ee_pblk) && /*C3*/ (prev_len < (EXT_INIT_MAX_LEN - map_len))) { /*C4*/ @@ -3452,7 +3452,7 @@ static int ext4_ext_convert_to_initialized(handle_t *handle, ex->ee_block = cpu_to_le32(ee_block + map_len); ext4_ext_store_pblock(ex, ee_pblk + map_len); ex->ee_len = cpu_to_le16(ee_len - map_len); - ext4_ext_mark_uninitialized(ex); /* Restore the flag */ + ext4_ext_mark_unwritten(ex); /* Restore the flag */ /* Extend abut_ex by 'map_len' blocks */ abut_ex->ee_len = cpu_to_le16(prev_len + map_len); @@ -3483,7 +3483,7 @@ static int ext4_ext_convert_to_initialized(handle_t *handle, * - C4: abut_ex can receive the additional blocks without * overflowing the (initialized) length limit. */ - if ((!ext4_ext_is_uninitialized(abut_ex)) && /*C1*/ + if ((!ext4_ext_is_unwritten(abut_ex)) && /*C1*/ ((map->m_lblk + map_len) == next_lblk) && /*C2*/ ((ee_pblk + ee_len) == next_pblk) && /*C3*/ (next_len < (EXT_INIT_MAX_LEN - map_len))) { /*C4*/ @@ -3498,7 +3498,7 @@ static int ext4_ext_convert_to_initialized(handle_t *handle, abut_ex->ee_block = cpu_to_le32(next_lblk - map_len); ext4_ext_store_pblock(abut_ex, next_pblk - map_len); ex->ee_len = cpu_to_le16(ee_len - map_len); - ext4_ext_mark_uninitialized(ex); /* Restore the flag */ + ext4_ext_mark_unwritten(ex); /* Restore the flag */ /* Extend abut_ex by 'map_len' blocks */ abut_ex->ee_len = cpu_to_le16(next_len + map_len); @@ -3603,26 +3603,26 @@ out: /* * This function is called by ext4_ext_map_blocks() from * ext4_get_blocks_dio_write() when DIO to write - * to an uninitialized extent. + * to an unwritten extent. * - * Writing to an uninitialized extent may result in splitting the uninitialized - * extent into multiple initialized/uninitialized extents (up to three) + * Writing to an unwritten extent may result in splitting the unwritten + * extent into multiple initialized/unwritten extents (up to three) * There are three possibilities: - * a> There is no split required: Entire extent should be uninitialized + * a> There is no split required: Entire extent should be unwritten * b> Splits in two extents: Write is happening at either end of the extent * c> Splits in three extents: Somone is writing in middle of the extent * * This works the same way in the case of initialized -> unwritten conversion. * * One of more index blocks maybe needed if the extent tree grow after - * the uninitialized extent split. To prevent ENOSPC occur at the IO - * complete, we need to split the uninitialized extent before DIO submit - * the IO. The uninitialized extent called at this time will be split - * into three uninitialized extent(at most). After IO complete, the part + * the unwritten extent split. To prevent ENOSPC occur at the IO + * complete, we need to split the unwritten extent before DIO submit + * the IO. The unwritten extent called at this time will be split + * into three unwritten extent(at most). After IO complete, the part * being filled will be convert to initialized by the end_io callback function * via ext4_convert_unwritten_extents(). * - * Returns the size of uninitialized extent to be written on success. + * Returns the size of unwritten extent to be written on success. */ static int ext4_split_convert_extents(handle_t *handle, struct inode *inode, @@ -3660,7 +3660,7 @@ static int ext4_split_convert_extents(handle_t *handle, } else if (flags & EXT4_GET_BLOCKS_CONVERT) { split_flag |= ee_block + ee_len <= eof_block ? EXT4_EXT_MAY_ZEROOUT : 0; - split_flag |= (EXT4_EXT_MARK_UNINIT2 | EXT4_EXT_DATA_VALID2); + split_flag |= (EXT4_EXT_MARK_UNWRIT2 | EXT4_EXT_DATA_VALID2); } flags |= EXT4_GET_BLOCKS_PRE_IO; return ext4_split_extent(handle, inode, path, map, split_flag, flags); @@ -3710,8 +3710,8 @@ static int ext4_convert_initialized_extents(handle_t *handle, err = ext4_ext_get_access(handle, inode, path + depth); if (err) goto out; - /* first mark the extent as uninitialized */ - ext4_ext_mark_uninitialized(ex); + /* first mark the extent as unwritten */ + ext4_ext_mark_unwritten(ex); /* note: ext4_ext_correct_indexes() isn't needed here because * borders are not changed @@ -3971,10 +3971,10 @@ ext4_ext_convert_initialized_extent(handle_t *handle, struct inode *inode, /* * Make sure that the extent is no bigger than we support with - * uninitialized extent + * unwritten extent */ - if (map->m_len > EXT_UNINIT_MAX_LEN) - map->m_len = EXT_UNINIT_MAX_LEN / 2; + if (map->m_len > EXT_UNWRITTEN_MAX_LEN) + map->m_len = EXT_UNWRITTEN_MAX_LEN / 2; ret = ext4_convert_initialized_extents(handle, inode, map, path); @@ -3993,7 +3993,7 @@ ext4_ext_convert_initialized_extent(handle_t *handle, struct inode *inode, } static int -ext4_ext_handle_uninitialized_extents(handle_t *handle, struct inode *inode, +ext4_ext_handle_unwritten_extents(handle_t *handle, struct inode *inode, struct ext4_map_blocks *map, struct ext4_ext_path *path, int flags, unsigned int allocated, ext4_fsblk_t newblock) @@ -4002,19 +4002,19 @@ ext4_ext_handle_uninitialized_extents(handle_t *handle, struct inode *inode, int err = 0; ext4_io_end_t *io = ext4_inode_aio(inode); - ext_debug("ext4_ext_handle_uninitialized_extents: inode %lu, logical " + ext_debug("ext4_ext_handle_unwritten_extents: inode %lu, logical " "block %llu, max_blocks %u, flags %x, allocated %u\n", inode->i_ino, (unsigned long long)map->m_lblk, map->m_len, flags, allocated); ext4_ext_show_leaf(inode, path); /* - * When writing into uninitialized space, we should not fail to + * When writing into unwritten space, we should not fail to * allocate metadata blocks for the new extent block if needed. */ flags |= EXT4_GET_BLOCKS_METADATA_NOFAIL; - trace_ext4_ext_handle_uninitialized_extents(inode, map, flags, + trace_ext4_ext_handle_unwritten_extents(inode, map, flags, allocated, newblock); /* get_block() before submit the IO, split the extent */ @@ -4033,8 +4033,6 @@ ext4_ext_handle_uninitialized_extents(handle_t *handle, struct inode *inode, else ext4_set_inode_state(inode, EXT4_STATE_DIO_UNWRITTEN); map->m_flags |= EXT4_MAP_UNWRITTEN; - if (ext4_should_dioread_nolock(inode)) - map->m_flags |= EXT4_MAP_UNINIT; goto out; } /* IO end_io complete, convert the filled extent to written */ @@ -4059,7 +4057,7 @@ ext4_ext_handle_uninitialized_extents(handle_t *handle, struct inode *inode, * repeat fallocate creation request * we already have an unwritten extent */ - if (flags & EXT4_GET_BLOCKS_UNINIT_EXT) { + if (flags & EXT4_GET_BLOCKS_UNWRIT_EXT) { map->m_flags |= EXT4_MAP_UNWRITTEN; goto map_out; } @@ -4310,7 +4308,7 @@ int ext4_ext_map_blocks(handle_t *handle, struct inode *inode, /* - * Uninitialized extents are treated as holes, except that + * unwritten extents are treated as holes, except that * we split out initialized portions during a write. */ ee_len = ext4_ext_get_actual_len(ex); @@ -4329,16 +4327,16 @@ int ext4_ext_map_blocks(handle_t *handle, struct inode *inode, * If the extent is initialized check whether the * caller wants to convert it to unwritten. */ - if ((!ext4_ext_is_uninitialized(ex)) && + if ((!ext4_ext_is_unwritten(ex)) && (flags & EXT4_GET_BLOCKS_CONVERT_UNWRITTEN)) { allocated = ext4_ext_convert_initialized_extent( handle, inode, map, path, flags, allocated, newblock); goto out2; - } else if (!ext4_ext_is_uninitialized(ex)) + } else if (!ext4_ext_is_unwritten(ex)) goto out; - ret = ext4_ext_handle_uninitialized_extents( + ret = ext4_ext_handle_unwritten_extents( handle, inode, map, path, flags, allocated, newblock); if (ret < 0) @@ -4410,15 +4408,15 @@ int ext4_ext_map_blocks(handle_t *handle, struct inode *inode, /* * See if request is beyond maximum number of blocks we can have in * a single extent. For an initialized extent this limit is - * EXT_INIT_MAX_LEN and for an uninitialized extent this limit is - * EXT_UNINIT_MAX_LEN. + * EXT_INIT_MAX_LEN and for an unwritten extent this limit is + * EXT_UNWRITTEN_MAX_LEN. */ if (map->m_len > EXT_INIT_MAX_LEN && - !(flags & EXT4_GET_BLOCKS_UNINIT_EXT)) + !(flags & EXT4_GET_BLOCKS_UNWRIT_EXT)) map->m_len = EXT_INIT_MAX_LEN; - else if (map->m_len > EXT_UNINIT_MAX_LEN && - (flags & EXT4_GET_BLOCKS_UNINIT_EXT)) - map->m_len = EXT_UNINIT_MAX_LEN; + else if (map->m_len > EXT_UNWRITTEN_MAX_LEN && + (flags & EXT4_GET_BLOCKS_UNWRIT_EXT)) + map->m_len = EXT_UNWRITTEN_MAX_LEN; /* Check if we can really insert (m_lblk)::(m_lblk + m_len) extent */ newex.ee_len = cpu_to_le16(map->m_len); @@ -4466,21 +4464,19 @@ got_allocated_blocks: /* try to insert new extent into found leaf and return */ ext4_ext_store_pblock(&newex, newblock + offset); newex.ee_len = cpu_to_le16(ar.len); - /* Mark uninitialized */ - if (flags & EXT4_GET_BLOCKS_UNINIT_EXT){ - ext4_ext_mark_uninitialized(&newex); + /* Mark unwritten */ + if (flags & EXT4_GET_BLOCKS_UNWRIT_EXT){ + ext4_ext_mark_unwritten(&newex); map->m_flags |= EXT4_MAP_UNWRITTEN; /* * io_end structure was created for every IO write to an - * uninitialized extent. To avoid unnecessary conversion, + * unwritten extent. To avoid unnecessary conversion, * here we flag the IO that really needs the conversion. * For non asycn direct IO case, flag the inode state * that we need to perform conversion when IO is done. */ if ((flags & EXT4_GET_BLOCKS_PRE_IO)) set_unwritten = 1; - if (ext4_should_dioread_nolock(inode)) - map->m_flags |= EXT4_MAP_UNINIT; } err = 0; @@ -4607,9 +4603,9 @@ got_allocated_blocks: /* * Cache the extent and update transaction to commit on fdatasync only - * when it is _not_ an uninitialized extent. + * when it is _not_ an unwritten extent. */ - if ((flags & EXT4_GET_BLOCKS_UNINIT_EXT) == 0) + if ((flags & EXT4_GET_BLOCKS_UNWRIT_EXT) == 0) ext4_update_inode_fsync_trans(handle, inode, 1); else ext4_update_inode_fsync_trans(handle, inode, 0); @@ -4683,7 +4679,7 @@ static int ext4_alloc_file_blocks(struct file *file, ext4_lblk_t offset, * that it doesn't get unnecessarily split into multiple * extents. */ - if (len <= EXT_UNINIT_MAX_LEN) + if (len <= EXT_UNWRITTEN_MAX_LEN) flags |= EXT4_GET_BLOCKS_NO_NORMALIZE; /* @@ -4775,7 +4771,7 @@ static long ext4_zero_range(struct file *file, loff_t offset, else max_blocks -= lblk; - flags = EXT4_GET_BLOCKS_CREATE_UNINIT_EXT | + flags = EXT4_GET_BLOCKS_CREATE_UNWRIT_EXT | EXT4_GET_BLOCKS_CONVERT_UNWRITTEN; if (mode & FALLOC_FL_KEEP_SIZE) flags |= EXT4_GET_BLOCKS_KEEP_SIZE; @@ -4918,7 +4914,7 @@ long ext4_fallocate(struct file *file, int mode, loff_t offset, loff_t len) max_blocks = (EXT4_BLOCK_ALIGN(len + offset, blkbits) >> blkbits) - lblk; - flags = EXT4_GET_BLOCKS_CREATE_UNINIT_EXT; + flags = EXT4_GET_BLOCKS_CREATE_UNWRIT_EXT; if (mode & FALLOC_FL_KEEP_SIZE) flags |= EXT4_GET_BLOCKS_KEEP_SIZE; diff --git a/fs/ext4/extents_status.c b/fs/ext4/extents_status.c index 0ebc21204b51..98c90f5834ee 100644 --- a/fs/ext4/extents_status.c +++ b/fs/ext4/extents_status.c @@ -433,7 +433,7 @@ static void ext4_es_insert_extent_ext_check(struct inode *inode, ee_start = ext4_ext_pblock(ex); ee_len = ext4_ext_get_actual_len(ex); - ee_status = ext4_ext_is_uninitialized(ex) ? 1 : 0; + ee_status = ext4_ext_is_unwritten(ex) ? 1 : 0; es_status = ext4_es_is_unwritten(es) ? 1 : 0; /* diff --git a/fs/ext4/file.c b/fs/ext4/file.c index 881394280d5f..86a13a514e4a 100644 --- a/fs/ext4/file.c +++ b/fs/ext4/file.c @@ -92,58 +92,91 @@ ext4_unaligned_aio(struct inode *inode, const struct iovec *iov, } static ssize_t -ext4_file_dio_write(struct kiocb *iocb, const struct iovec *iov, - unsigned long nr_segs, loff_t pos) +ext4_file_write(struct kiocb *iocb, const struct iovec *iov, + unsigned long nr_segs, loff_t pos) { struct file *file = iocb->ki_filp; - struct inode *inode = file->f_mapping->host; + struct inode *inode = file_inode(iocb->ki_filp); + struct mutex *aio_mutex = NULL; struct blk_plug plug; - int unaligned_aio = 0; - ssize_t ret; + int o_direct = file->f_flags & O_DIRECT; int overwrite = 0; size_t length = iov_length(iov, nr_segs); + ssize_t ret; - if (ext4_test_inode_flag(inode, EXT4_INODE_EXTENTS) && - !is_sync_kiocb(iocb)) - unaligned_aio = ext4_unaligned_aio(inode, iov, nr_segs, pos); + BUG_ON(iocb->ki_pos != pos); - /* Unaligned direct AIO must be serialized; see comment above */ - if (unaligned_aio) { - mutex_lock(ext4_aio_mutex(inode)); + /* + * Unaligned direct AIO must be serialized; see comment above + * In the case of O_APPEND, assume that we must always serialize + */ + if (o_direct && + ext4_test_inode_flag(inode, EXT4_INODE_EXTENTS) && + !is_sync_kiocb(iocb) && + (file->f_flags & O_APPEND || + ext4_unaligned_aio(inode, iov, nr_segs, pos))) { + aio_mutex = ext4_aio_mutex(inode); + mutex_lock(aio_mutex); ext4_unwritten_wait(inode); } - BUG_ON(iocb->ki_pos != pos); - mutex_lock(&inode->i_mutex); - blk_start_plug(&plug); + if (file->f_flags & O_APPEND) + iocb->ki_pos = pos = i_size_read(inode); + + /* + * If we have encountered a bitmap-format file, the size limit + * is smaller than s_maxbytes, which is for extent-mapped files. + */ + if (!(ext4_test_inode_flag(inode, EXT4_INODE_EXTENTS))) { + struct ext4_sb_info *sbi = EXT4_SB(inode->i_sb); - iocb->private = &overwrite; + if ((pos > sbi->s_bitmap_maxbytes) || + (pos == sbi->s_bitmap_maxbytes && length > 0)) { + mutex_unlock(&inode->i_mutex); + ret = -EFBIG; + goto errout; + } - /* check whether we do a DIO overwrite or not */ - if (ext4_should_dioread_nolock(inode) && !unaligned_aio && - !file->f_mapping->nrpages && pos + length <= i_size_read(inode)) { - struct ext4_map_blocks map; - unsigned int blkbits = inode->i_blkbits; - int err, len; + if (pos + length > sbi->s_bitmap_maxbytes) { + nr_segs = iov_shorten((struct iovec *)iov, nr_segs, + sbi->s_bitmap_maxbytes - pos); + } + } - map.m_lblk = pos >> blkbits; - map.m_len = (EXT4_BLOCK_ALIGN(pos + length, blkbits) >> blkbits) - - map.m_lblk; - len = map.m_len; + if (o_direct) { + blk_start_plug(&plug); - err = ext4_map_blocks(NULL, inode, &map, 0); - /* - * 'err==len' means that all of blocks has been preallocated no - * matter they are initialized or not. For excluding - * uninitialized extents, we need to check m_flags. There are - * two conditions that indicate for initialized extents. - * 1) If we hit extent cache, EXT4_MAP_MAPPED flag is returned; - * 2) If we do a real lookup, non-flags are returned. - * So we should check these two conditions. - */ - if (err == len && (map.m_flags & EXT4_MAP_MAPPED)) - overwrite = 1; + iocb->private = &overwrite; + + /* check whether we do a DIO overwrite or not */ + if (ext4_should_dioread_nolock(inode) && !aio_mutex && + !file->f_mapping->nrpages && pos + length <= i_size_read(inode)) { + struct ext4_map_blocks map; + unsigned int blkbits = inode->i_blkbits; + int err, len; + + map.m_lblk = pos >> blkbits; + map.m_len = (EXT4_BLOCK_ALIGN(pos + length, blkbits) >> blkbits) + - map.m_lblk; + len = map.m_len; + + err = ext4_map_blocks(NULL, inode, &map, 0); + /* + * 'err==len' means that all of blocks has + * been preallocated no matter they are + * initialized or not. For excluding + * unwritten extents, we need to check + * m_flags. There are two conditions that + * indicate for initialized extents. 1) If we + * hit extent cache, EXT4_MAP_MAPPED flag is + * returned; 2) If we do a real lookup, + * non-flags are returned. So we should check + * these two conditions. + */ + if (err == len && (map.m_flags & EXT4_MAP_MAPPED)) + overwrite = 1; + } } ret = __generic_file_aio_write(iocb, iov, nr_segs); @@ -156,45 +189,12 @@ ext4_file_dio_write(struct kiocb *iocb, const struct iovec *iov, if (err < 0) ret = err; } - blk_finish_plug(&plug); - - if (unaligned_aio) - mutex_unlock(ext4_aio_mutex(inode)); - - return ret; -} - -static ssize_t -ext4_file_write(struct kiocb *iocb, const struct iovec *iov, - unsigned long nr_segs, loff_t pos) -{ - struct inode *inode = file_inode(iocb->ki_filp); - ssize_t ret; - - /* - * If we have encountered a bitmap-format file, the size limit - * is smaller than s_maxbytes, which is for extent-mapped files. - */ - - if (!(ext4_test_inode_flag(inode, EXT4_INODE_EXTENTS))) { - struct ext4_sb_info *sbi = EXT4_SB(inode->i_sb); - size_t length = iov_length(iov, nr_segs); - - if ((pos > sbi->s_bitmap_maxbytes || - (pos == sbi->s_bitmap_maxbytes && length > 0))) - return -EFBIG; - - if (pos + length > sbi->s_bitmap_maxbytes) { - nr_segs = iov_shorten((struct iovec *)iov, nr_segs, - sbi->s_bitmap_maxbytes - pos); - } - } - - if (unlikely(iocb->ki_filp->f_flags & O_DIRECT)) - ret = ext4_file_dio_write(iocb, iov, nr_segs, pos); - else - ret = generic_file_aio_write(iocb, iov, nr_segs, pos); + if (o_direct) + blk_finish_plug(&plug); +errout: + if (aio_mutex) + mutex_unlock(aio_mutex); return ret; } diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c index e5718385a037..b2cee73c1437 100644 --- a/fs/ext4/inode.c +++ b/fs/ext4/inode.c @@ -489,8 +489,8 @@ 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 allocate. - * if create==0 and the blocks are pre-allocated and uninitialized block, + * On success, it returns the number of blocks being mapped or allocated. + * if create==0 and the blocks are pre-allocated and unwritten block, * the result buffer head is unmapped. If the create ==1, it will make sure * the buffer head is mapped. * @@ -622,7 +622,7 @@ found: map->m_flags &= ~EXT4_MAP_FLAGS; /* - * New blocks allocate and/or writing to uninitialized extent + * New blocks allocate and/or writing to unwritten extent * will possibly result in updating i_data, so we take * the write lock of i_data_sem, and call get_blocks() * with create == 1 flag. @@ -2032,7 +2032,7 @@ static int mpage_process_page_bufs(struct mpage_da_data *mpd, * Scan buffers corresponding to changed extent (we expect corresponding pages * to be already locked) and update buffer state according to new extent state. * We map delalloc buffers to their physical location, clear unwritten bits, - * and mark buffers as uninit when we perform writes to uninitialized extents + * and mark buffers as uninit when we perform writes to unwritten extents * and do extent conversion after IO is finished. If the last page is not fully * mapped, we update @map to the next extent in the last page that needs * mapping. Otherwise we submit the page for IO. @@ -2126,12 +2126,12 @@ static int mpage_map_one_extent(handle_t *handle, struct mpage_da_data *mpd) struct inode *inode = mpd->inode; struct ext4_map_blocks *map = &mpd->map; int get_blocks_flags; - int err; + int err, dioread_nolock; trace_ext4_da_write_pages_extent(inode, map); /* * Call ext4_map_blocks() to allocate any delayed allocation blocks, or - * to convert an uninitialized extent to be initialized (in the case + * to convert an unwritten extent to be initialized (in the case * where we have written into one or more preallocated blocks). It is * possible that we're going to need more metadata blocks than * previously reserved. However we must not fail because we're in @@ -2148,7 +2148,8 @@ static int mpage_map_one_extent(handle_t *handle, struct mpage_da_data *mpd) */ get_blocks_flags = EXT4_GET_BLOCKS_CREATE | EXT4_GET_BLOCKS_METADATA_NOFAIL; - if (ext4_should_dioread_nolock(inode)) + dioread_nolock = ext4_should_dioread_nolock(inode); + if (dioread_nolock) get_blocks_flags |= EXT4_GET_BLOCKS_IO_CREATE_EXT; if (map->m_flags & (1 << BH_Delay)) get_blocks_flags |= EXT4_GET_BLOCKS_DELALLOC_RESERVE; @@ -2156,7 +2157,7 @@ static int mpage_map_one_extent(handle_t *handle, struct mpage_da_data *mpd) err = ext4_map_blocks(handle, inode, map, get_blocks_flags); if (err < 0) return err; - if (map->m_flags & EXT4_MAP_UNINIT) { + if (dioread_nolock && (map->m_flags & EXT4_MAP_UNWRITTEN)) { if (!mpd->io_submit.io_end->handle && ext4_handle_valid(handle)) { mpd->io_submit.io_end->handle = handle->h_rsv_handle; @@ -3070,9 +3071,9 @@ static void ext4_end_io_dio(struct kiocb *iocb, loff_t offset, * preallocated extents, and those write extend the file, no need to * fall back to buffered IO. * - * For holes, we fallocate those blocks, mark them as uninitialized + * For holes, we fallocate those blocks, mark them as unwritten * If those blocks were preallocated, we mark sure they are split, but - * still keep the range to write as uninitialized. + * still keep the range to write as unwritten. * * The unwritten extents will be converted to written when DIO is completed. * For async direct IO, since the IO may still pending when return, we @@ -3123,12 +3124,12 @@ static ssize_t ext4_ext_direct_IO(int rw, struct kiocb *iocb, * We could direct write to holes and fallocate. * * Allocated blocks to fill the hole are marked as - * uninitialized to prevent parallel buffered read to expose + * unwritten to prevent parallel buffered read to expose * the stale data before DIO complete the data IO. * * As to previously fallocated extents, ext4 get_block will * just simply mark the buffer mapped but still keep the - * extents uninitialized. + * extents unwritten. * * For non AIO case, we will convert those unwritten extents * to written after return back from blockdev_direct_IO. diff --git a/fs/ext4/move_extent.c b/fs/ext4/move_extent.c index 58ee7dc87669..1b809fe51da1 100644 --- a/fs/ext4/move_extent.c +++ b/fs/ext4/move_extent.c @@ -57,8 +57,8 @@ get_ext_path(struct inode *inode, ext4_lblk_t lblock, static void copy_extent_status(struct ext4_extent *src, struct ext4_extent *dest) { - if (ext4_ext_is_uninitialized(src)) - ext4_ext_mark_uninitialized(dest); + if (ext4_ext_is_unwritten(src)) + ext4_ext_mark_unwritten(dest); else dest->ee_len = cpu_to_le16(ext4_ext_get_actual_len(dest)); } @@ -593,14 +593,14 @@ mext_calc_swap_extents(struct ext4_extent *tmp_dext, * @inode: inode in question * @from: block offset of inode * @count: block count to be checked - * @uninit: extents expected to be uninitialized + * @unwritten: extents expected to be unwritten * @err: pointer to save error value * * Return 1 if all extents in range has expected type, and zero otherwise. */ static int mext_check_coverage(struct inode *inode, ext4_lblk_t from, ext4_lblk_t count, - int uninit, int *err) + int unwritten, int *err) { struct ext4_ext_path *path = NULL; struct ext4_extent *ext; @@ -611,7 +611,7 @@ mext_check_coverage(struct inode *inode, ext4_lblk_t from, ext4_lblk_t count, if (*err) goto out; ext = path[ext_depth(inode)].p_ext; - if (uninit != ext4_ext_is_uninitialized(ext)) + if (unwritten != ext4_ext_is_unwritten(ext)) goto out; from += ext4_ext_get_actual_len(ext); ext4_ext_drop_refs(path); @@ -894,7 +894,7 @@ out: * @orig_page_offset: page index on original file * @data_offset_in_page: block index where data swapping starts * @block_len_in_page: the number of blocks to be swapped - * @uninit: orig extent is uninitialized or not + * @unwritten: orig extent is unwritten or not * @err: pointer to save return value * * Save the data in original inode blocks and replace original inode extents @@ -905,7 +905,7 @@ out: static int move_extent_per_page(struct file *o_filp, struct inode *donor_inode, pgoff_t orig_page_offset, int data_offset_in_page, - int block_len_in_page, int uninit, int *err) + int block_len_in_page, int unwritten, int *err) { struct inode *orig_inode = file_inode(o_filp); struct page *pagep[2] = {NULL, NULL}; @@ -962,27 +962,27 @@ again: if (unlikely(*err < 0)) goto stop_journal; /* - * If orig extent was uninitialized it can become initialized + * If orig extent was unwritten it can become initialized * at any time after i_data_sem was dropped, in order to * serialize with delalloc we have recheck extent while we * hold page's lock, if it is still the case data copy is not * necessary, just swap data blocks between orig and donor. */ - if (uninit) { + if (unwritten) { ext4_double_down_write_data_sem(orig_inode, donor_inode); /* If any of extents in range became initialized we have to * fallback to data copying */ - uninit = mext_check_coverage(orig_inode, orig_blk_offset, - block_len_in_page, 1, err); + unwritten = mext_check_coverage(orig_inode, orig_blk_offset, + block_len_in_page, 1, err); if (*err) goto drop_data_sem; - uninit &= mext_check_coverage(donor_inode, orig_blk_offset, - block_len_in_page, 1, err); + unwritten &= mext_check_coverage(donor_inode, orig_blk_offset, + block_len_in_page, 1, err); if (*err) goto drop_data_sem; - if (!uninit) { + if (!unwritten) { ext4_double_up_write_data_sem(orig_inode, donor_inode); goto data_copy; } @@ -1259,7 +1259,7 @@ ext4_move_extents(struct file *o_filp, struct file *d_filp, int blocks_per_page = PAGE_CACHE_SIZE >> orig_inode->i_blkbits; int data_offset_in_page; int block_len_in_page; - int uninit; + int unwritten; if (orig_inode->i_sb != donor_inode->i_sb) { ext4_debug("ext4 move extent: The argument files " @@ -1391,8 +1391,8 @@ ext4_move_extents(struct file *o_filp, struct file *d_filp, !last_extent) continue; - /* Is original extent is uninitialized */ - uninit = ext4_ext_is_uninitialized(ext_prev); + /* Is original extent is unwritten */ + unwritten = ext4_ext_is_unwritten(ext_prev); data_offset_in_page = seq_start % blocks_per_page; @@ -1432,8 +1432,8 @@ ext4_move_extents(struct file *o_filp, struct file *d_filp, o_filp, donor_inode, orig_page_offset, data_offset_in_page, - block_len_in_page, uninit, - &ret); + block_len_in_page, + unwritten, &ret); /* Count how many blocks we have exchanged */ *moved_len += block_len_in_page; diff --git a/fs/ext4/super.c b/fs/ext4/super.c index 6f9e6fadac04..c4895c195e00 100644 --- a/fs/ext4/super.c +++ b/fs/ext4/super.c @@ -3337,7 +3337,7 @@ static ext4_fsblk_t ext4_calculate_resv_clusters(struct super_block *sb) * By default we reserve 2% or 4096 clusters, whichever is smaller. * This should cover the situations where we can not afford to run * out of space like for example punch hole, or converting - * uninitialized extents in delalloc path. In most cases such + * unwritten extents in delalloc path. In most cases such * allocation would require 1, or 2 blocks, higher numbers are * very rare. */ diff --git a/include/trace/events/ext4.h b/include/trace/events/ext4.h index 6a1a0245474f..d4f70a7fe876 100644 --- a/include/trace/events/ext4.h +++ b/include/trace/events/ext4.h @@ -36,7 +36,7 @@ struct extent_status; #define show_map_flags(flags) __print_flags(flags, "|", \ { EXT4_GET_BLOCKS_CREATE, "CREATE" }, \ - { EXT4_GET_BLOCKS_UNINIT_EXT, "UNINIT" }, \ + { EXT4_GET_BLOCKS_UNWRIT_EXT, "UNWRIT" }, \ { EXT4_GET_BLOCKS_DELALLOC_RESERVE, "DELALLOC" }, \ { EXT4_GET_BLOCKS_PRE_IO, "PRE_IO" }, \ { EXT4_GET_BLOCKS_CONVERT, "CONVERT" }, \ @@ -51,7 +51,6 @@ struct extent_status; { EXT4_MAP_MAPPED, "M" }, \ { EXT4_MAP_UNWRITTEN, "U" }, \ { EXT4_MAP_BOUNDARY, "B" }, \ - { EXT4_MAP_UNINIT, "u" }, \ { EXT4_MAP_FROM_CLUSTER, "C" }) #define show_free_flags(flags) __print_flags(flags, "|", \ @@ -1497,7 +1496,7 @@ DEFINE_EVENT(ext4__truncate, ext4_truncate_exit, TP_ARGS(inode) ); -/* 'ux' is the uninitialized extent. */ +/* 'ux' is the unwritten extent. */ TRACE_EVENT(ext4_ext_convert_to_initialized_enter, TP_PROTO(struct inode *inode, struct ext4_map_blocks *map, struct ext4_extent *ux), @@ -1533,7 +1532,7 @@ TRACE_EVENT(ext4_ext_convert_to_initialized_enter, ); /* - * 'ux' is the uninitialized extent. + * 'ux' is the unwritten extent. * 'ix' is the initialized extent to which blocks are transferred. */ TRACE_EVENT(ext4_ext_convert_to_initialized_fastpath, @@ -1811,7 +1810,7 @@ DEFINE_EVENT(ext4__trim, ext4_trim_all_free, TP_ARGS(sb, group, start, len) ); -TRACE_EVENT(ext4_ext_handle_uninitialized_extents, +TRACE_EVENT(ext4_ext_handle_unwritten_extents, TP_PROTO(struct inode *inode, struct ext4_map_blocks *map, int flags, unsigned int allocated, ext4_fsblk_t newblock), |