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| author | Josef Bacik <josef@redhat.com> | 2011-07-16 20:44:56 -0400 |
|---|---|---|
| committer | Andreas Blaesius <skate4life@gmx.de> | 2016-06-05 21:21:12 +0200 |
| commit | 4e16e118f4291b49cffd32749e1ae95ac8b73917 (patch) | |
| tree | 9862cae44a2cdfaef80abbe62d1c5ff98a152071 /ipc | |
| parent | 2f05ce93619a00c46bcbbcd382d2cea125196a6e (diff) | |
| download | kernel_samsung_espresso10-4e16e118f4291b49cffd32749e1ae95ac8b73917.tar.gz kernel_samsung_espresso10-4e16e118f4291b49cffd32749e1ae95ac8b73917.tar.bz2 kernel_samsung_espresso10-4e16e118f4291b49cffd32749e1ae95ac8b73917.zip | |
fs: push i_mutex and filemap_write_and_wait down into ->fsync() handlers
Btrfs needs to be able to control how filemap_write_and_wait_range() is called
in fsync to make it less of a painful operation, so push down taking i_mutex and
the calling of filemap_write_and_wait() down into the ->fsync() handlers. Some
file systems can drop taking the i_mutex altogether it seems, like ext3 and
ocfs2. For correctness sake I just pushed everything down in all cases to make
sure that we keep the current behavior the same for everybody, and then each
individual fs maintainer can make up their mind about what to do from there.
Thanks,
Acked-by: Jan Kara <jack@suse.cz>
Signed-off-by: Josef Bacik <josef@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Conflicts:
Documentation/filesystems/porting
Change-Id: I7697244cce355e6d443a39c5133a5c94f02e199b
Diffstat (limited to 'ipc')
| -rw-r--r-- | ipc/shm.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/ipc/shm.c b/ipc/shm.c index 10e17a7ccad..55796c8b2d0 100644 --- a/ipc/shm.c +++ b/ipc/shm.c @@ -277,13 +277,13 @@ static int shm_release(struct inode *ino, struct file *file) return 0; } -static int shm_fsync(struct file *file, int datasync) +static int shm_fsync(struct file *file, loff_t start, loff_t end, int datasync) { struct shm_file_data *sfd = shm_file_data(file); if (!sfd->file->f_op->fsync) return -EINVAL; - return sfd->file->f_op->fsync(sfd->file, datasync); + return sfd->file->f_op->fsync(sfd->file, start, end, datasync); } static unsigned long shm_get_unmapped_area(struct file *file, |