Zheng Liu 4bd809dbbf ext4: don't take the i_mutex lock when doing DIO overwrites ... Aligned and overwrite direct I/O can be parallelized. In ext4_file_dio_write, we first check whether these conditions are satisfied or not. If so, we take i_data_sem and release i_mutex lock directly. Meanwhile iocb->private is set to indicate that this is a dio overwrite, and it will be handled in ext4_ext_direct_IO. [ Added fix from Dan Carpenter to fix locking bug on the error path. ] CC: Tao Ma <tm@tao.ma> CC: Eric Sandeen <sandeen@redhat.com> CC: Robin Dong <hao.bigrat@gmail.com> Signed-off-by: Zheng Liu <wenqing.lz@taobao.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu> Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>		2012-07-22 20:19:31 -04:00
..
acl.c	switch posix_acl_equiv_mode() to umode_t *	2011-08-01 02:10:06 -04:00
acl.h	fs: take the ACL checks to common code	2011-07-25 14:30:23 -04:00
balloc.c	ext4: pass a char * to ext4_count_free() instead of a buffer_head ptr	2012-06-30 19:14:57 -04:00
bitmap.c	ext4: fix overhead calculation used by ext4_statfs()	2012-07-09 16:27:05 -04:00
block_validity.c	ext2/3/4: delete unneeded includes of module.h	2012-01-09 13:52:10 +01:00
dir.c	ext4: calculate and verify checksums of directory leaf blocks	2012-04-29 18:41:10 -04:00
ext4_extents.h	ext4: verify and calculate checksums for extent tree blocks	2012-04-29 18:37:10 -04:00
ext4_jbd2.c	ext4: calculate and verify superblock checksum	2012-04-29 18:29:10 -04:00
ext4_jbd2.h	ext4: calculate and verify superblock checksum	2012-04-29 18:29:10 -04:00
ext4.h	ext4: add a new nolock flag in ext4_map_blocks	2012-07-09 16:29:29 -04:00
extents.c	ext4: fix out-of-date comments in extents.c	2012-07-09 16:29:28 -04:00
file.c	ext4: don't take the i_mutex lock when doing DIO overwrites	2012-07-22 20:19:31 -04:00
fsync.c	ext4: fix race between sync and completed io work	2012-03-05 10:29:52 -05:00
hash.c	ext4: return 32/64-bit dir name hash according to usage type	2012-03-18 22:44:40 -04:00
ialloc.c	ext4: pass a char * to ext4_count_free() instead of a buffer_head ptr	2012-06-30 19:14:57 -04:00
indirect.c	ext2/3/4: delete unneeded includes of module.h	2012-01-09 13:52:10 +01:00
inode.c	ext4: don't take the i_mutex lock when doing DIO overwrites	2012-07-22 20:19:31 -04:00
ioctl.c	ext4: don't set i_flags in EXT4_IOC_SETFLAGS	2012-06-07 19:04:19 -04:00
Kconfig	ext4: load the crc32c driver if necessary	2012-04-29 18:27:10 -04:00
Makefile	ext4: move ext4_ind_* functions from inode.c to indirect.c	2011-06-27 19:40:50 -04:00
mballoc.c	ext4: remove an unused statement in ext4_mb_get_buddy_page_lock()	2012-07-09 16:29:28 -04:00
mballoc.h	ext4: remove EXT4_MB_{BITMAP,BUDDY} macros	2012-02-20 17:54:06 -05:00
migrate.c	userns: Convert ext4 to user kuid/kgid where appropriate	2012-05-15 14:59:27 -07:00
mmp.c	ext4: add checksums to the MMP block	2012-04-29 18:47:10 -04:00
move_extent.c	ext4: add some tracepoints in ext4/extents.c	2011-09-09 19:18:51 -04:00
namei.c	ext4: use proper csum calculation in ext4_rename	2012-07-09 16:29:05 -04:00
page-io.c	Revert "ext4: don't release page refs in ext4_end_bio()"	2012-03-29 17:00:56 -07:00
resize.c	ext4: fix overhead calculation used by ext4_statfs()	2012-07-09 16:27:05 -04:00
super.c	ext4: fix overhead calculation used by ext4_statfs()	2012-07-09 16:27:05 -04:00
symlink.c	ext4: symlink must be handled via filesystem specific operation	2010-05-16 02:00:00 -04:00
truncate.h	ext4: move common truncate functions to header file	2011-06-27 19:16:04 -04:00
xattr_security.c	Merge branch 'for_linus' into for_linus_merged	2012-01-10 11:54:07 -05:00
xattr_trusted.c	ext2/3/4: delete unneeded includes of module.h	2012-01-09 13:52:10 +01:00
xattr_user.c	ext2/3/4: delete unneeded includes of module.h	2012-01-09 13:52:10 +01:00
xattr.c	ext4: use s_csum_seed instead of i_csum_seed for xattr block	2012-07-09 16:29:27 -04:00
xattr.h	ext4: change on-disk layout to support extended metadata checksumming	2012-04-29 18:23:10 -04:00