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| author | Liu Bo <bo.li.liu@oracle.com> | 2017-02-03 04:49:22 +0300 |
|---|---|---|
| committer | David Sterba <dsterba@suse.com> | 2017-02-14 17:51:00 +0300 |
| commit | 873695b301df51dc9dac2573669ac8777d37bec3 (patch) | |
| tree | cfff6015321b016dccfd838f9ce0bdab1d84f8be /fs/btrfs/extent_io.c | |
| parent | e4c3b2dcd1449def1229efb138da7cb28c796c71 (diff) | |
| download | linux-873695b301df51dc9dac2573669ac8777d37bec3.tar.xz | |
Btrfs: create helper for processing bits on contiguous pages
This introduces a new helper which can be used to process pages bits.
Signed-off-by: Liu Bo <bo.li.liu@oracle.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'fs/btrfs/extent_io.c')
| -rw-r--r-- | fs/btrfs/extent_io.c | 37 |
1 files changed, 22 insertions, 15 deletions
diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c index 69c054000f08..664f52c1c58a 100644 --- a/fs/btrfs/extent_io.c +++ b/fs/btrfs/extent_io.c @@ -1731,28 +1731,22 @@ out_failed: return found; } -void extent_clear_unlock_delalloc(struct inode *inode, u64 start, u64 end, - u64 delalloc_end, struct page *locked_page, - unsigned clear_bits, - unsigned long page_ops) +static void __process_pages_contig(struct address_space *mapping, + struct page *locked_page, + pgoff_t start_index, pgoff_t end_index, + unsigned long page_ops) { - struct extent_io_tree *tree = &BTRFS_I(inode)->io_tree; - int ret; + unsigned long nr_pages = end_index - start_index + 1; + pgoff_t index = start_index; struct page *pages[16]; - unsigned long index = start >> PAGE_SHIFT; - unsigned long end_index = end >> PAGE_SHIFT; - unsigned long nr_pages = end_index - index + 1; + unsigned ret; int i; - clear_extent_bit(tree, start, end, clear_bits, 1, 0, NULL, GFP_NOFS); - if (page_ops == 0) - return; - if ((page_ops & PAGE_SET_ERROR) && nr_pages > 0) - mapping_set_error(inode->i_mapping, -EIO); + mapping_set_error(mapping, -EIO); while (nr_pages > 0) { - ret = find_get_pages_contig(inode->i_mapping, index, + ret = find_get_pages_contig(mapping, index, min_t(unsigned long, nr_pages, ARRAY_SIZE(pages)), pages); for (i = 0; i < ret; i++) { @@ -1782,6 +1776,19 @@ void extent_clear_unlock_delalloc(struct inode *inode, u64 start, u64 end, } } +void extent_clear_unlock_delalloc(struct inode *inode, u64 start, u64 end, + u64 delalloc_end, struct page *locked_page, + unsigned clear_bits, + unsigned long page_ops) +{ + clear_extent_bit(&BTRFS_I(inode)->io_tree, start, end, clear_bits, 1, 0, + NULL, GFP_NOFS); + + __process_pages_contig(inode->i_mapping, locked_page, + start >> PAGE_SHIFT, end >> PAGE_SHIFT, + page_ops); +} + /* * count the number of bytes in the tree that have a given bit(s) * set. This can be fairly slow, except for EXTENT_DIRTY which is |