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author	Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
	Tue, 29 Jan 2008 04:58:26 +0000 (23:58 -0500)
committer	Theodore Ts'o <tytso@mit.edu>
	Tue, 29 Jan 2008 04:58:26 +0000 (23:58 -0500)
commit	0e855ac8b103ef579052936b59fe7c599ac422a4
tree	ec29f82e1d7bb1987dcadc00497daf69d6955483	tree \| snapshot
parent	c278bfecebfb1ed67c326ef472660878baa745cd	commit \| diff

ext4: Convert truncate_mutex to read write semaphore.

We are currently taking the truncate_mutex for every read. This would have
performance impact on large CPU configuration. Convert the lock to read write
semaphore and take read lock when we are trying to read the file.

Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>

fs/ext4/balloc.c		diff \| blob \| blame \| history
fs/ext4/extents.c		diff \| blob \| blame \| history
fs/ext4/file.c		diff \| blob \| blame \| history
fs/ext4/inode.c		diff \| blob \| blame \| history
fs/ext4/ioctl.c		diff \| blob \| blame \| history
fs/ext4/super.c		diff \| blob \| blame \| history
include/linux/ext4_fs.h		diff \| blob \| blame \| history
include/linux/ext4_fs_i.h		diff \| blob \| blame \| history

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