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| author | Theodore Ts'o <tytso@mit.edu> | 2011-02-26 14:09:20 -0500 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2011-02-26 14:09:20 -0500 |
| commit | 168fc0223c0e944957b1f31d88c2334fc904baf1 (patch) | |
| tree | 1768f86cca5cef5ae1ba2275fca7ea9f0c0630d5 /fs/ext4 | |
| parent | 78aaced3408141bb7c836f2db0ca435790399da5 (diff) | |
| download | linux-3.10-168fc0223c0e944957b1f31d88c2334fc904baf1.tar.gz linux-3.10-168fc0223c0e944957b1f31d88c2334fc904baf1.tar.bz2 linux-3.10-168fc0223c0e944957b1f31d88c2334fc904baf1.zip | |
ext4: move setup of the mpd structure to write_cache_pages_da()
Move the initialization of all of the fields of the mpd structure to
write_cache_pages_da(). This simplifies the code considerably.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Diffstat (limited to 'fs/ext4')
| -rw-r--r-- | fs/ext4/inode.c | 29 |
1 files changed, 7 insertions, 22 deletions
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c index c2e6af33823..dcc2287433b 100644 --- a/fs/ext4/inode.c +++ b/fs/ext4/inode.c @@ -2714,7 +2714,8 @@ static int ext4_da_writepages_trans_blocks(struct inode *inode) /* * write_cache_pages_da - walk the list of dirty pages of the given * address space and accumulate pages that need writing, and call - * mpage_da_map_and_submit to map the pages and then write them. + * mpage_da_map_and_submit to map a single contiguous memory region + * and then write them. */ static int write_cache_pages_da(struct address_space *mapping, struct writeback_control *wbc, @@ -2722,7 +2723,7 @@ static int write_cache_pages_da(struct address_space *mapping, pgoff_t *done_index) { struct buffer_head *bh, *head; - struct inode *inode = mpd->inode; + struct inode *inode = mapping->host; struct pagevec pvec; unsigned int nr_pages; sector_t logical; @@ -2730,6 +2731,9 @@ static int write_cache_pages_da(struct address_space *mapping, long nr_to_write = wbc->nr_to_write; int i, tag, ret = 0; + memset(mpd, 0, sizeof(struct mpage_da_data)); + mpd->wbc = wbc; + mpd->inode = inode; pagevec_init(&pvec, 0); index = wbc->range_start >> PAGE_CACHE_SHIFT; end = wbc->range_end >> PAGE_CACHE_SHIFT; @@ -2794,16 +2798,8 @@ static int write_cache_pages_da(struct address_space *mapping, BUG_ON(PageWriteback(page)); - if (mpd->next_page != page->index) { - /* - * Start next extent of pages and blocks - */ + if (mpd->next_page != page->index) mpd->first_page = page->index; - mpd->b_size = 0; - mpd->b_state = 0; - mpd->b_blocknr = 0; - } - mpd->next_page = page->index + 1; logical = (sector_t) page->index << (PAGE_CACHE_SHIFT - inode->i_blkbits); @@ -2975,9 +2971,6 @@ static int ext4_da_writepages(struct address_space *mapping, wbc->nr_to_write = desired_nr_to_write; } - mpd.wbc = wbc; - mpd.inode = mapping->host; - retry: if (wbc->sync_mode == WB_SYNC_ALL) tag_pages_for_writeback(mapping, index, end); @@ -3008,14 +3001,6 @@ retry: * contiguous region of logical blocks that need * blocks to be allocated by ext4 and submit them. */ - mpd.b_size = 0; - mpd.b_state = 0; - mpd.b_blocknr = 0; - mpd.first_page = 0; - mpd.next_page = 0; - mpd.io_done = 0; - mpd.pages_written = 0; - mpd.retval = 0; ret = write_cache_pages_da(mapping, wbc, &mpd, &done_index); /* * If we have a contiguous extent of pages and we |