ext4: Use slab allocator for sub-page sized allocations

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Now that the SLUB seems to be fixed so that it respects the requested
alignment, use kmem_cache_alloc() to allocator if the block size of
the buffer heads to be allocated is less than the page size.
Previously, we were using 16k page on a Power system for each buffer,
even when the file system was using 1k or 4k block size.

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>

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Theodore Ts'o 2009-12-07 10:36:20 -05:00

parent f8ec9d6837

commit d2eecb0393

2 changed files with 134 additions and 9 deletions

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132

fs/jbd2/journal.c

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11

include/linux/jbd2.h

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