diff options
Diffstat (limited to 'fs/ext4/inode.c')
| -rw-r--r-- | fs/ext4/inode.c | 86 |
1 files changed, 60 insertions, 26 deletions
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c index bdbe6990220..9f7f9e49914 100644 --- a/fs/ext4/inode.c +++ b/fs/ext4/inode.c @@ -39,7 +39,9 @@ #include <linux/bio.h> #include <linux/workqueue.h> #include <linux/kernel.h> +#include <linux/printk.h> #include <linux/slab.h> +#include <linux/ratelimit.h> #include "ext4_jbd2.h" #include "xattr.h" @@ -54,10 +56,17 @@ static inline int ext4_begin_ordered_truncate(struct inode *inode, loff_t new_size) { trace_ext4_begin_ordered_truncate(inode, new_size); - return jbd2_journal_begin_ordered_truncate( - EXT4_SB(inode->i_sb)->s_journal, - &EXT4_I(inode)->jinode, - new_size); + /* + * If jinode is zero, then we never opened the file for + * writing, so there's no need to call + * jbd2_journal_begin_ordered_truncate() since there's no + * outstanding writes we need to flush. + */ + if (!EXT4_I(inode)->jinode) + return 0; + return jbd2_journal_begin_ordered_truncate(EXT4_JOURNAL(inode), + EXT4_I(inode)->jinode, + new_size); } static void ext4_invalidatepage(struct page *page, unsigned long offset); @@ -552,7 +561,7 @@ static ext4_fsblk_t ext4_find_goal(struct inode *inode, ext4_lblk_t block, } /** - * ext4_blks_to_allocate: Look up the block map and count the number + * ext4_blks_to_allocate - Look up the block map and count the number * of direct blocks need to be allocated for the given branch. * * @branch: chain of indirect blocks @@ -591,13 +600,19 @@ static int ext4_blks_to_allocate(Indirect *branch, int k, unsigned int blks, /** * ext4_alloc_blocks: multiple allocate blocks needed for a branch + * @handle: handle for this transaction + * @inode: inode which needs allocated blocks + * @iblock: the logical block to start allocated at + * @goal: preferred physical block of allocation * @indirect_blks: the number of blocks need to allocate for indirect * blocks - * + * @blks: number of desired blocks * @new_blocks: on return it will store the new block numbers for * the indirect blocks(if needed) and the first direct block, - * @blks: on return it will store the total number of allocated - * direct blocks + * @err: on return it will store the error code + * + * This function will return the number of blocks allocated as + * requested by the passed-in parameters. */ static int ext4_alloc_blocks(handle_t *handle, struct inode *inode, ext4_lblk_t iblock, ext4_fsblk_t goal, @@ -711,9 +726,11 @@ failed_out: /** * ext4_alloc_branch - allocate and set up a chain of blocks. + * @handle: handle for this transaction * @inode: owner * @indirect_blks: number of allocated indirect blocks * @blks: number of allocated direct blocks + * @goal: preferred place for allocation * @offsets: offsets (in the blocks) to store the pointers to next. * @branch: place to store the chain in. * @@ -826,6 +843,7 @@ failed: /** * ext4_splice_branch - splice the allocated branch onto inode. + * @handle: handle for this transaction * @inode: owner * @block: (logical) number of block we are adding * @chain: chain of indirect blocks (with a missing link - see @@ -1081,7 +1099,7 @@ static int ext4_indirect_calc_metadata_amount(struct inode *inode, * Calculate the number of metadata blocks need to reserve * to allocate a block located at @lblock */ -static int ext4_calc_metadata_amount(struct inode *inode, sector_t lblock) +static int ext4_calc_metadata_amount(struct inode *inode, ext4_lblk_t lblock) { if (ext4_test_inode_flag(inode, EXT4_INODE_EXTENTS)) return ext4_ext_calc_metadata_amount(inode, lblock); @@ -1320,7 +1338,7 @@ int ext4_map_blocks(handle_t *handle, struct inode *inode, * avoid double accounting */ if (flags & EXT4_GET_BLOCKS_DELALLOC_RESERVE) - EXT4_I(inode)->i_delalloc_reserved_flag = 1; + ext4_set_inode_state(inode, EXT4_STATE_DELALLOC_RESERVED); /* * We need to check for EXT4 here because migrate * could have changed the inode type in between @@ -1350,7 +1368,7 @@ int ext4_map_blocks(handle_t *handle, struct inode *inode, ext4_da_update_reserve_space(inode, retval, 1); } if (flags & EXT4_GET_BLOCKS_DELALLOC_RESERVE) - EXT4_I(inode)->i_delalloc_reserved_flag = 0; + ext4_clear_inode_state(inode, EXT4_STATE_DELALLOC_RESERVED); up_write((&EXT4_I(inode)->i_data_sem)); if (retval > 0 && map->m_flags & EXT4_MAP_MAPPED) { @@ -1878,7 +1896,7 @@ static int ext4_journalled_write_end(struct file *file, /* * Reserve a single block located at lblock */ -static int ext4_da_reserve_space(struct inode *inode, sector_t lblock) +static int ext4_da_reserve_space(struct inode *inode, ext4_lblk_t lblock) { int retries = 0; struct ext4_sb_info *sbi = EXT4_SB(inode->i_sb); @@ -2125,9 +2143,12 @@ static int mpage_da_submit_io(struct mpage_da_data *mpd, */ if (unlikely(journal_data && PageChecked(page))) err = __ext4_journalled_writepage(page, len); - else + else if (test_opt(inode->i_sb, MBLK_IO_SUBMIT)) err = ext4_bio_write_page(&io_submit, page, len, mpd->wbc); + else + err = block_write_full_page(page, + noalloc_get_block_write, mpd->wbc); if (!err) mpd->pages_written++; @@ -2236,7 +2257,7 @@ static void mpage_da_map_and_submit(struct mpage_da_data *mpd) * affects functions in many different parts of the allocation * call path. This flag exists primarily because we don't * want to change *many* call functions, so ext4_map_blocks() - * will set the magic i_delalloc_reserved_flag once the + * will set the EXT4_STATE_DELALLOC_RESERVED flag once the * inode's allocation semaphore is taken. * * If the blocks in questions were delalloc blocks, set @@ -3359,7 +3380,7 @@ int ext4_alloc_da_blocks(struct inode *inode) * doing I/O at all. * * We could call write_cache_pages(), and then redirty all of - * the pages by calling redirty_page_for_writeback() but that + * the pages by calling redirty_page_for_writepage() but that * would be ugly in the extreme. So instead we would need to * replicate parts of the code in the above functions, * simplifying them becuase we wouldn't actually intend to @@ -3717,8 +3738,7 @@ static int ext4_set_bh_endio(struct buffer_head *bh, struct inode *inode) retry: io_end = ext4_init_io_end(inode, GFP_ATOMIC); if (!io_end) { - if (printk_ratelimit()) - printk(KERN_WARNING "%s: allocation fail\n", __func__); + pr_warn_ratelimited("%s: allocation fail\n", __func__); schedule(); goto retry; } @@ -3742,9 +3762,9 @@ retry: * 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 unintialized + * For holes, we fallocate those blocks, mark them as uninitialized * If those blocks were preallocated, we mark sure they are splited, but - * still keep the range to write as unintialized. + * still keep the range to write as uninitialized. * * The unwrritten extents will be converted to written when DIO is completed. * For async direct IO, since the IO may still pending when return, we @@ -4042,7 +4062,7 @@ int ext4_block_truncate_page(handle_t *handle, if (ext4_should_journal_data(inode)) { err = ext4_handle_dirty_metadata(handle, inode, bh); } else { - if (ext4_should_order_data(inode)) + if (ext4_should_order_data(inode) && EXT4_I(inode)->jinode) err = ext4_jbd2_file_inode(handle, inode); mark_buffer_dirty(bh); } @@ -4166,6 +4186,7 @@ static int ext4_clear_blocks(handle_t *handle, struct inode *inode, { __le32 *p; int flags = EXT4_FREE_BLOCKS_FORGET | EXT4_FREE_BLOCKS_VALIDATED; + int err; if (S_ISDIR(inode->i_mode) || S_ISLNK(inode->i_mode)) flags |= EXT4_FREE_BLOCKS_METADATA; @@ -4181,11 +4202,23 @@ static int ext4_clear_blocks(handle_t *handle, struct inode *inode, if (try_to_extend_transaction(handle, inode)) { if (bh) { BUFFER_TRACE(bh, "call ext4_handle_dirty_metadata"); - ext4_handle_dirty_metadata(handle, inode, bh); + err = ext4_handle_dirty_metadata(handle, inode, bh); + if (unlikely(err)) { + ext4_std_error(inode->i_sb, err); + return 1; + } + } + err = ext4_mark_inode_dirty(handle, inode); + if (unlikely(err)) { + ext4_std_error(inode->i_sb, err); + return 1; + } + err = ext4_truncate_restart_trans(handle, inode, + blocks_for_truncate(inode)); + if (unlikely(err)) { + ext4_std_error(inode->i_sb, err); + return 1; } - ext4_mark_inode_dirty(handle, inode); - ext4_truncate_restart_trans(handle, inode, - blocks_for_truncate(inode)); if (bh) { BUFFER_TRACE(bh, "retaking write access"); ext4_journal_get_write_access(handle, bh); @@ -4346,6 +4379,7 @@ static void ext4_free_branches(handle_t *handle, struct inode *inode, (__le32 *) bh->b_data, (__le32 *) bh->b_data + addr_per_block, depth); + brelse(bh); /* * Everything below this this pointer has been @@ -4856,7 +4890,7 @@ struct inode *ext4_iget(struct super_block *sb, unsigned long ino) } inode->i_nlink = le16_to_cpu(raw_inode->i_links_count); - ei->i_state_flags = 0; + ext4_clear_state_flags(ei); /* Only relevant on 32-bit archs */ ei->i_dir_start_lookup = 0; ei->i_dtime = le32_to_cpu(raw_inode->i_dtime); /* We now have enough fields to check if the inode was active or not. @@ -5115,7 +5149,7 @@ static int ext4_do_update_inode(handle_t *handle, if (ext4_inode_blocks_set(handle, raw_inode, ei)) goto out_brelse; raw_inode->i_dtime = cpu_to_le32(ei->i_dtime); - raw_inode->i_flags = cpu_to_le32(ei->i_flags); + raw_inode->i_flags = cpu_to_le32(ei->i_flags & 0xFFFFFFFF); if (EXT4_SB(inode->i_sb)->s_es->s_creator_os != cpu_to_le32(EXT4_OS_HURD)) raw_inode->i_file_acl_high = |