ocfs2: clearly handle ocfs2_grab_pages_for_write() return value

ocfs2_grab_pages_for_write() may return -EAGAIN if write context type is
mmap and it could not lock the target page.  In this case, we exit with
no error and no target page.  And then trigger the caller page_mkwrite()
to retry.

Since there are other caller types, e.g.  buffer and direct io, make the
return value handling more clear.

Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Joseph Qi <[email protected]>
Reported-by: Dan Carpenter <[email protected]>
Cc: Mark Fasheh <[email protected]>
Cc: Joel Becker <[email protected]>
Cc: Junxiao Bi <[email protected]>
Cc: Changwei Ge <[email protected]>
Cc: Gang He <[email protected]>
Cc: Jun Piao <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

0 files changed, 0 insertions, 0 deletions