Theodore Ts'o eb8abb927a ext4: Remove useless spinlock in ext4_getattr() ...

Linus noted, and complained to me, that doing while lots of "git diff"'s
of kernel sources, these spinlocks were responsible for 27% of the
spinlock cost on his two-processor system as reported by perf.

Git was doing lots of parallel stats, and this was putting a lot of
pressure on ext4_getattr().  A spinlock to protect a single
memory-to-memory copy is pointless, so remove it.

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

2010-11-02 10:38:30 -04:00

..

acl.c

…

acl.h

…

balloc.c

ext4: rename mark_bitmap_end() to ext4_mark_bitmap_end()

2010-10-27 21:30:15 -04:00

bitmap.c

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block_validity.c

ext4: rename {exit,init}_ext4_*() to ext4_{exit,init}_*()

2010-10-27 21:30:14 -04:00

dir.c

ext4: improve llseek error handling for overly large seek offsets

2010-10-27 21:30:06 -04:00

ext4_extents.h

ext4: rename {ext,idx}_pblock and inline small extent functions

2010-10-27 21:30:14 -04:00

ext4_jbd2.c

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ext4_jbd2.h

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ext4.h

ext4: move ext4_mb_{get,put}_buddy_cache_lock and make them static

2010-10-27 21:30:15 -04:00

extents.c

Merge branch 'next' into upstream-merge

2010-10-27 23:44:47 -04:00

file.c

ext4: improve llseek error handling for overly large seek offsets

2010-10-27 21:30:06 -04:00

fsync.c

Merge branch 'next' into upstream-merge

2010-10-27 23:44:47 -04:00

hash.c

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ialloc.c

Merge branch 'next' into upstream-merge

2010-10-27 23:44:47 -04:00

inode.c

ext4: Remove useless spinlock in ext4_getattr()

2010-11-02 10:38:30 -04:00

ioctl.c

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Kconfig

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Makefile

ext4: use bio layer instead of buffer layer in mpage_da_submit_io

2010-10-27 21:30:10 -04:00

mballoc.c

Merge branch 'next' into upstream-merge

2010-10-27 23:44:47 -04:00

mballoc.h

…

migrate.c

ext4: rename {ext,idx}_pblock and inline small extent functions

2010-10-27 21:30:14 -04:00

move_extent.c

ext4: rename {ext,idx}_pblock and inline small extent functions

2010-10-27 21:30:14 -04:00

namei.c

Merge branch 'next' into upstream-merge

2010-10-27 23:44:47 -04:00

page-io.c

ext4: rename {exit,init}_ext4_*() to ext4_{exit,init}_*()

2010-10-27 21:30:14 -04:00

resize.c

Merge branch 'next' into upstream-merge

2010-10-27 23:44:47 -04:00

super.c

new helper: mount_bdev()

2010-10-29 04:16:13 -04:00

symlink.c

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xattr_security.c

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xattr_trusted.c

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xattr_user.c

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xattr.c

ext4: rename {exit,init}_ext4_*() to ext4_{exit,init}_*()

2010-10-27 21:30:14 -04:00

xattr.h

ext4: fix compile with CONFIG_EXT4_FS_XATTR disabled

2010-10-28 09:29:17 -07:00