diff options
| -rw-r--r-- | fs/ext4/inode.c | 110 |
1 files changed, 43 insertions, 67 deletions
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c index e6113c3a126..bfe50a22363 100644 --- a/fs/ext4/inode.c +++ b/fs/ext4/inode.c @@ -2006,57 +2006,6 @@ static void ext4_print_free_blocks(struct inode *inode) } /* - * This function is used by mpage_da_map_blocks(). We separate it out - * as a separate function just to make life easier, and because - * mpage_da_map_blocks() used to be a generic function that took a - * get_block_t. - */ -static int ext4_da_get_block_write(struct inode *inode, sector_t iblock, - struct buffer_head *bh_result) -{ - int ret; - unsigned max_blocks = bh_result->b_size >> inode->i_blkbits; - loff_t disksize = EXT4_I(inode)->i_disksize; - handle_t *handle = NULL; - - handle = ext4_journal_current_handle(); - BUG_ON(!handle); - ret = ext4_get_blocks(handle, inode, iblock, max_blocks, - bh_result, EXT4_GET_BLOCKS_CREATE| - EXT4_GET_BLOCKS_DELALLOC_RESERVE); - if (ret <= 0) - return ret; - - bh_result->b_size = (ret << inode->i_blkbits); - - if (ext4_should_order_data(inode)) { - int retval; - retval = ext4_jbd2_file_inode(handle, inode); - if (retval) - /* - * Failed to add inode for ordered mode. Don't - * update file size - */ - return retval; - } - - /* - * Update on-disk size along with block allocation we don't - * use EXT4_GET_BLOCKS_EXTEND_DISKSIZE as size may change - * within already allocated block -bzzz - */ - disksize = ((loff_t) iblock + ret) << inode->i_blkbits; - if (disksize > i_size_read(inode)) - disksize = i_size_read(inode); - if (disksize > EXT4_I(inode)->i_disksize) { - ext4_update_i_disksize(inode, disksize); - ret = ext4_mark_inode_dirty(handle, inode); - return ret; - } - return 0; -} - -/* * mpage_da_map_blocks - go through given space * * @mpd - bh describing space @@ -2066,9 +2015,12 @@ static int ext4_da_get_block_write(struct inode *inode, sector_t iblock, */ static int mpage_da_map_blocks(struct mpage_da_data *mpd) { - int err = 0; + int err, blks; struct buffer_head new; - sector_t next; + sector_t next = mpd->b_blocknr; + unsigned max_blocks = mpd->b_size >> mpd->inode->i_blkbits; + loff_t disksize = EXT4_I(mpd->inode)->i_disksize; + handle_t *handle = NULL; /* * We consider only non-mapped and non-allocated blocks @@ -2077,6 +2029,16 @@ static int mpage_da_map_blocks(struct mpage_da_data *mpd) !(mpd->b_state & (1 << BH_Delay)) && !(mpd->b_state & (1 << BH_Unwritten))) return 0; + + /* + * If we didn't accumulate anything to write simply return + */ + if (!mpd->b_size) + return 0; + + handle = ext4_journal_current_handle(); + BUG_ON(!handle); + /* * We need to make sure the BH_Delay flag is passed down to * ext4_da_get_block_write(), since it calls ext4_get_blocks() @@ -2092,18 +2054,11 @@ static int mpage_da_map_blocks(struct mpage_da_data *mpd) * EXT4_GET_BLOCKS_DELALLOC_RESERVE flag. */ new.b_state = mpd->b_state & (1 << BH_Delay); - new.b_blocknr = 0; - new.b_size = mpd->b_size; - next = mpd->b_blocknr; - /* - * If we didn't accumulate anything - * to write simply return - */ - if (!new.b_size) - return 0; - - err = ext4_da_get_block_write(mpd->inode, next, &new); - if (err) { + blks = ext4_get_blocks(handle, mpd->inode, next, max_blocks, + &new, EXT4_GET_BLOCKS_CREATE| + EXT4_GET_BLOCKS_DELALLOC_RESERVE); + if (blks < 0) { + err = blks; /* * If get block returns with error we simply * return. Later writepage will redirty the page and @@ -2136,12 +2091,14 @@ static int mpage_da_map_blocks(struct mpage_da_data *mpd) if (err == -ENOSPC) { ext4_print_free_blocks(mpd->inode); } - /* invlaidate all the pages */ + /* invalidate all the pages */ ext4_da_block_invalidatepages(mpd, next, mpd->b_size >> mpd->inode->i_blkbits); return err; } - BUG_ON(new.b_size == 0); + BUG_ON(blks == 0); + + new.b_size = (blks << mpd->inode->i_blkbits); if (buffer_new(&new)) __unmap_underlying_blocks(mpd->inode, &new); @@ -2154,6 +2111,25 @@ static int mpage_da_map_blocks(struct mpage_da_data *mpd) (mpd->b_state & (1 << BH_Unwritten))) mpage_put_bnr_to_bhs(mpd, next, &new); + if (ext4_should_order_data(mpd->inode)) { + err = ext4_jbd2_file_inode(handle, mpd->inode); + if (err) + return err; + } + + /* + * Update on-disk size along with block allocation we don't + * use EXT4_GET_BLOCKS_EXTEND_DISKSIZE as size may change + * within already allocated block -bzzz + */ + disksize = ((loff_t) next + blks) << mpd->inode->i_blkbits; + if (disksize > i_size_read(mpd->inode)) + disksize = i_size_read(mpd->inode); + if (disksize > EXT4_I(mpd->inode)->i_disksize) { + ext4_update_i_disksize(mpd->inode, disksize); + return ext4_mark_inode_dirty(handle, mpd->inode); + } + return 0; } |