The patch titled
Subject: ocfs2-nowait-aio-support-v4
has been added to the -mm tree. Its filename is
ocfs2-nowait-aio-support-v4.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/ocfs2-nowait-aio-support-v4.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/ocfs2-nowait-aio-support-v4.patch
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*** Remember to use Documentation/SubmitChecklist when testing your code ***
The -mm tree is included into linux-next and is updated
there every 3-4 working days
------------------------------------------------------
From: Gang He <ghe@xxxxxxxx>
Subject: ocfs2-nowait-aio-support-v4
Compare with v3, modify the check condition for nowait in
ocfs2_file_write_iter() function. second, add direct-io and nowait
combination check in ocfs2_file_read_iter() function. Compare with v2, do
some modification in ocfs2_overwrite_io() function for
OCFS2_INLINE_DATA_FL case.
Link: http://lkml.kernel.org/r/1516007283-29932-4-git-send-email-ghe@xxxxxxxx
Signed-off-by: Gang He <ghe@xxxxxxxx>
Cc: Mark Fasheh <mfasheh@xxxxxxxxxxx>
Cc: Joel Becker <jlbec@xxxxxxxxxxxx>
Cc: Junxiao Bi <junxiao.bi@xxxxxxxxxx>
Cc: Joseph Qi <jiangqi903@xxxxxxxxx>
Cc: Changwei Ge <ge.changwei@xxxxxxx>
Cc: Jun Piao <piaojun@xxxxxxxxxx>
Cc: alex chen <alex.chen@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
fs/ocfs2/file.c | 10 +++++++---
1 file changed, 7 insertions(+), 3 deletions(-)
diff -puN fs/ocfs2/file.c~ocfs2-nowait-aio-support-v4 fs/ocfs2/file.c
--- a/fs/ocfs2/file.c~ocfs2-nowait-aio-support-v4
+++ a/fs/ocfs2/file.c
@@ -2269,7 +2269,7 @@ static ssize_t ocfs2_file_write_iter(str
if (count == 0)
return 0;
- if (direct_io && nowait) {
+ if (nowait) {
if (!inode_trylock(inode))
return -EAGAIN;
} else
@@ -2282,7 +2282,7 @@ static ssize_t ocfs2_file_write_iter(str
*/
rw_level = (!direct_io || full_coherency || append_write);
- if (direct_io && nowait)
+ if (nowait)
ret = ocfs2_try_rw_lock(inode, rw_level);
else
ret = ocfs2_rw_lock(inode, rw_level);
@@ -2402,6 +2402,7 @@ static ssize_t ocfs2_file_read_iter(stru
int ret = 0, rw_level = -1, lock_level = 0;
struct file *filp = iocb->ki_filp;
struct inode *inode = file_inode(filp);
+ int direct_io = iocb->ki_flags & IOCB_DIRECT ? 1 : 0;
int nowait = iocb->ki_flags & IOCB_NOWAIT ? 1 : 0;
trace_ocfs2_file_aio_read(inode, filp, filp->f_path.dentry,
@@ -2417,11 +2418,14 @@ static ssize_t ocfs2_file_read_iter(stru
goto bail;
}
+ if (!direct_io && nowait)
+ return -EOPNOTSUPP;
+
/*
* buffered reads protect themselves in ->readpage(). O_DIRECT reads
* need locks to protect pending reads from racing with truncate.
*/
- if (iocb->ki_flags & IOCB_DIRECT) {
+ if (direct_io) {
if (nowait)
ret = ocfs2_try_rw_lock(inode, 0);
else
_
Patches currently in -mm which might be from ghe@xxxxxxxx are
ocfs2-give-an-obvious-tip-for-dismatch-cluster-names.patch
ocfs2-try-a-blocking-lock-before-return-aop_truncated_page.patch
ocfs2-get-rid-of-ocfs2_is_o2cb_active-function.patch
ocfs2-move-some-definitions-to-header-file.patch
ocfs2-fix-some-small-problems.patch
ocfs2-add-kobject-for-online-file-check.patch
ocfs2-add-duplicative-ino-number-check.patch
ocfs2-add-ocfs2_try_rw_lock-and-ocfs2_try_inode_lock.patch
ocfs2-add-ocfs2_overwrite_io-function.patch
ocfs2-add-ocfs2_overwrite_io-function-v3.patch
ocfs2-nowait-aio-support.patch
ocfs2-nowait-aio-support-v4.patch
ocfs2-add-trimfs-dlm-lock-resource.patch
ocfs2-add-trimfs-lock-to-avoid-duplicated-trims-in-cluster.patch
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