Fix inline extent handling in btrfs_get_extent

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1.  Reorder kmap and the test for  'page != NULL'
2.  Zero-fill rest area of a block when inline extent isn't big enough.
3.  Do not insert extent_map into the map tree when page == NULL.
(If insert the extent_map into the map tree,  subsequent read requests
will find it in the map tree directly and the corresponding inline
extent data aren't copied into page by the the get_extent function.
extent_read_full_page can't handle that case)

Signed-off-by: Chris Mason <chris.mason@oracle.com>

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Yan 2007-10-29 11:41:07 -04:00 • committed by Chris Mason

parent c67cda1758

commit 689f934661

1 changed files with 18 additions and 16 deletions

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38

fs/btrfs/inode.c

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