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authorAnton Blanchard <anton@samba.org>2010-04-07 01:34:58 +0400
committerLinus Torvalds <torvalds@linux-foundation.org>2010-04-07 19:38:04 +0400
commit55ab3a1ff843e3f0e24d2da44e71bffa5d853010 (patch)
tree092f383aab3dc57d6780348aa9638d01e99041cf /drivers/char
parentda258016293f5e82b36db67ac3db3931a4fbbc4d (diff)
downloadlinux-55ab3a1ff843e3f0e24d2da44e71bffa5d853010.tar.xz
raw: fsync method is now required
Commit 148f948ba877f4d3cdef036b1ff6d9f68986706a (vfs: Introduce new helpers for syncing after writing to O_SYNC file or IS_SYNC inode) broke the raw driver. We now call through generic_file_aio_write -> generic_write_sync -> vfs_fsync_range. vfs_fsync_range has: if (!fop || !fop->fsync) { ret = -EINVAL; goto out; } But drivers/char/raw.c doesn't set an fsync method. We have two options: fix it or remove the raw driver completely. I'm happy to do either, the fact this has been broken for so long suggests it is rarely used. The patch below adds an fsync method to the raw driver. My knowledge of the block layer is pretty sketchy so this could do with a once over. If we instead decide to remove the raw driver, this patch might still be useful as a backport to 2.6.33 and 2.6.32. Signed-off-by: Anton Blanchard <anton@samba.org> Reviewed-by: Jan Kara <jack@suse.cz> Cc: Christoph Hellwig <hch@lst.de> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: Jens Axboe <jens.axboe@oracle.com> Reviewed-by: Jeff Moyer <jmoyer@redhat.com> Tested-by: Jeff Moyer <jmoyer@redhat.com> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/char')
-rw-r--r--drivers/char/raw.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/char/raw.c b/drivers/char/raw.c
index d331c59b571c..f5a32317b751 100644
--- a/drivers/char/raw.c
+++ b/drivers/char/raw.c
@@ -248,6 +248,7 @@ static const struct file_operations raw_fops = {
.aio_read = generic_file_aio_read,
.write = do_sync_write,
.aio_write = blkdev_aio_write,
+ .fsync = block_fsync,
.open = raw_open,
.release= raw_release,
.ioctl = raw_ioctl,