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linux/fs/ext4
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Yongqiang Yang b221349fa8 ext4: fix ext4_ext_fiemap_cb() to handle blocks before request range correctly 
To get delayed-extent information, ext4_ext_fiemap_cb() looks up
pagecache, it thus collects information starting from a page's
head block.

If blocksize < pagesize, the beginning blocks of a page may lies
before the request range. So ext4_ext_fiemap_cb() should proceed
ignoring them, because they has been handled before. If no mapped
buffer in the range is found in the 1st page, we need to look up
the 2nd page, otherwise delayed-extents after a hole will be ignored.

Without this patch, xfstests 225 will hung on ext4 with 1K block.

Reported-by: Amir Goldstein <amir73il@users.sourceforge.net>
Signed-off-by: Yongqiang Yang <xiaoqiangnk@gmail.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
2011-05-24 11:36:58 -04:00
..
acl.c userns: rename is_owner_or_cap to inode_owner_or_capable 2011-03-23 19:47:13 -07:00
acl.h fs: provide rcu-walk aware permission i_ops 2011-01-07 17:50:29 +11:00
balloc.c ext4: move ext4_add_groupblocks() to mballoc.c 2011-05-09 10:46:41 -04:00
bitmap.c ext4: Change unsigned long to unsigned int 2008-11-05 00:14:04 -05:00
block_validity.c ext4: rename {exit,init}_ext4_*() to ext4_{exit,init}_*() 2010-10-27 21:30:14 -04:00
dir.c ext4: Use ext4_error_file() to print the pathname to the corrupted inode 2011-01-10 12:10:55 -05:00
ext4.h ext4: count hits/misses of extent cache and expose in sysfs 2011-05-22 21:24:16 -04:00
ext4_extents.h ext4: drop ec_type from the ext4_ext_cache structure 2011-01-10 12:13:26 -05:00
ext4_jbd2.c ext4: remove unneeded ext4_journal_get_undo_access 2011-05-09 10:58:45 -04:00
ext4_jbd2.h ext4: remove unneeded ext4_journal_get_undo_access 2011-05-09 10:58:45 -04:00
extents.c ext4: fix ext4_ext_fiemap_cb() to handle blocks before request range correctly 2011-05-24 11:36:58 -04:00
file.c ext4: serialize unaligned asynchronous DIO 2011-02-12 08:17:34 -05:00
fsync.c ext4: use EXT4FS_DEBUG instead of EXT4_DEBUG in fsync.c 2011-05-09 10:25:54 -04:00
hash.c ext4: Add support for non-native signed/unsigned htree hash algorithms 2008-10-28 13:21:44 -04:00
ialloc.c Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4 2011-03-25 09:57:41 -07:00
inode.c ext4: use truncate_setsize() unconditionally 2011-05-23 15:13:02 -04:00
ioctl.c Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4 2011-03-25 09:57:41 -07:00
Kconfig ext4: Don't ask about supporting ext2/3 in ext4 if ext4 is not configured 2009-12-21 10:54:09 -05:00
Makefile ext4: use bio layer instead of buffer layer in mpage_da_submit_io 2010-10-27 21:30:10 -04:00
mballoc.c ext4: remove alloc_semp 2011-05-09 21:52:36 -04:00
mballoc.h ext4: remove alloc_semp 2011-05-09 21:52:36 -04:00
migrate.c ext4: set extents flag when migrating file to use extents 2011-05-03 09:34:42 -04:00
move_extent.c ext4: clean up some wait_on_page_writeback calls 2011-05-18 13:53:20 -04:00
namei.c ext4: don't dereference null pointer when make_indexed_dir() fails 2011-05-15 00:19:41 -04:00
page-io.c ext4: don't set PageUptodate in ext4_end_bio() 2011-04-30 13:26:26 -04:00
resize.c ext4: unify the ext4_handle_release_buffer() api 2011-03-20 22:57:02 -04:00
super.c ext4: count hits/misses of extent cache and expose in sysfs 2011-05-22 21:24:16 -04:00
symlink.c ext4: symlink must be handled via filesystem specific operation 2010-05-16 02:00:00 -04:00
xattr.c ext4: unify the ext4_handle_release_buffer() api 2011-03-20 22:57:02 -04:00
xattr.h fs/vfs/security: pass last path component to LSM on inode creation 2011-02-01 11:12:29 -05:00
xattr_security.c fs/vfs/security: pass last path component to LSM on inode creation 2011-02-01 11:12:29 -05:00
xattr_trusted.c ext4: constify xattr_handler 2010-05-21 18:31:19 -04:00
xattr_user.c ext4: constify xattr_handler 2010-05-21 18:31:19 -04:00