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Chris Mason ba1da2f442 Btrfs: Don't pin pages in ram until the entire ordered extent is on disk. ... Checksum items are not inserted until the entire ordered extent is on disk, but individual pages might be clean and available for reclaim long before the whole extent is on disk. In order to allow those pages to be freed, we need to be able to search the list of ordered extents to find the checksum that is going to be inserted in the tree. This way if the page needs to be read back in before the checksums are in the btree, we'll be able to verify the checksum on the page. This commit adds the ability to search the pending ordered extents for a given offset in the file, and changes btrfs_releasepage to allow ordered pages to be freed. Signed-off-by: Chris Mason <chris.mason@oracle.com>		2008-09-25 11:04:04 -04:00
fs/btrfs	Btrfs: Don't pin pages in ram until the entire ordered extent is on disk.	2008-09-25 11:04:04 -04:00