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f9b395a xfs: align initial file allocations correctly
8e825e3 xfs: fix calculation of freed inode cluster blocks
b3f03ba xfs: xfs_dir2_block_to_sf temp buffer allocation fails
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commit f9b395a8ef8f34d19cae2cde361e19c96e097fad
Author: Dave Chinner <dchinner@xxxxxxxxxx>
Date: Fri Nov 22 10:41:16 2013 +1100
xfs: align initial file allocations correctly
The function xfs_bmap_isaeof() is used to indicate that an
allocation is occurring at or past the end of file, and as such
should be aligned to the underlying storage geometry if possible.
Commit 27a3f8f ("xfs: introduce xfs_bmap_last_extent") changed the
behaviour of this function for empty files - it turned off
allocation alignment for this case accidentally. Hence large initial
allocations from direct IO are not getting correctly aligned to the
underlying geometry, and that is cause write performance to drop in
alignment sensitive configurations.
Fix it by considering allocation into empty files as requiring
aligned allocation again.
Signed-off-by: Dave Chinner <dchinner@xxxxxxxxxx>
Reviewed-by: Christoph Hellwig <hch@xxxxxx>
Signed-off-by: Ben Myers <bpm@xxxxxxx>
commit 8e825e3a02ff20973154559c33e662cacedc4458
Author: Ben Myers <bpm@xxxxxxx>
Date: Tue Dec 10 14:59:31 2013 -0600
xfs: fix calculation of freed inode cluster blocks
rec.ir_startino is an agino rather than an ino. Use the correct macro
when dealing with it in xfs_difree.
Signed-off-by: Ben Myers <bpm@xxxxxxx>
Reviewed-by: Christoph Hellwig <hch@xxxxxx>
commit b3f03bac8132207a20286d5602eda64500c19724
Author: Dave Chinner <dchinner@xxxxxxxxxx>
Date: Tue Dec 3 23:50:57 2013 +1100
xfs: xfs_dir2_block_to_sf temp buffer allocation fails
If we are using a large directory block size, and memory becomes
fragmented, we can get memory allocation failures trying to
kmem_alloc(64k) for a temporary buffer. However, there is not need
for a directory buffer sized allocation, as the end result ends up
in the inode literal area. This is, at most, slightly less than 2k
of space, and hence we don't need an allocation larger than that
fora temporary buffer.
Signed-off-by: Dave Chinner <dchinner@xxxxxxxxxx>
Reviewed-by: Ben Myers <bpm@xxxxxxx>
Signed-off-by: Ben Myers <bpm@xxxxxxx>
-----------------------------------------------------------------------
Summary of changes:
fs/xfs/xfs_bmap.c | 9 ++++++--
fs/xfs/xfs_dir2_sf.c | 58 ++++++++++++++++++++++++++++++----------------------
fs/xfs/xfs_ialloc.c | 2 +-
3 files changed, 42 insertions(+), 27 deletions(-)
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