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| author | Miklos Szeredi <mszeredi@redhat.com> | 2016-08-24 18:17:04 +0200 |
|---|---|---|
| committer | Miklos Szeredi <mszeredi@redhat.com> | 2016-08-24 18:17:04 +0200 |
| commit | 8fba54aebbdf1f999738121922e74bf796ad60ee (patch) | |
| tree | fca6bcc907a272cd72bf952778467a5ad4428a6a /fs/cifs/cache.c | |
| parent | fa8410b355251fd30341662a40ac6b22d3e38468 (diff) | |
| download | linux-8fba54aebbdf1f999738121922e74bf796ad60ee.tar.gz linux-8fba54aebbdf1f999738121922e74bf796ad60ee.tar.bz2 linux-8fba54aebbdf1f999738121922e74bf796ad60ee.zip | |
fuse: direct-io: don't dirty ITER_BVEC pages
When reading from a loop device backed by a fuse file it deadlocks on
lock_page().
This is because the page is already locked by the read() operation done on
the loop device. In this case we don't want to either lock the page or
dirty it.
So do what fs/direct-io.c does: only dirty the page for ITER_IOVEC vectors.
Reported-by: Sheng Yang <sheng@yasker.org>
Fixes: aa4d86163e4e ("block: loop: switch to VFS ITER_BVEC")
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Cc: <stable@vger.kernel.org> # v4.1+
Reviewed-by: Sheng Yang <sheng@yasker.org>
Reviewed-by: Ashish Samant <ashish.samant@oracle.com>
Tested-by: Sheng Yang <sheng@yasker.org>
Tested-by: Ashish Samant <ashish.samant@oracle.com>
Diffstat (limited to 'fs/cifs/cache.c')
0 files changed, 0 insertions, 0 deletions