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fuse: use exclusive lock when FUSE_I_CACHE_IO_MODE is set
authoryangyun <yangyun50@huawei.com>
Sat, 14 Sep 2024 08:51:31 +0000 (16:51 +0800)
committerMiklos Szeredi <mszeredi@redhat.com>
Tue, 24 Sep 2024 11:21:33 +0000 (13:21 +0200)
commit2f3d8ff457982f4055fe8f7bf19d3821ba22c376
tree3b224336b3c4909ee40d0cdfec9d395ab8d36d37tree
parentfcd2d9e1fdcd7cada612f2e8737fb13a2bce7d0ecommit | diff
fuse: use exclusive lock when FUSE_I_CACHE_IO_MODE is set

This may be a typo. The comment has said shared locks are
not allowed when this bit is set. If using shared lock, the
wait in `fuse_file_cached_io_open` may be forever.

Fixes: 205c1d802683 ("fuse: allow parallel dio writes with FUSE_DIRECT_IO_ALLOW_MMAP")
CC: stable@vger.kernel.org # v6.9
Signed-off-by: yangyun <yangyun50@huawei.com>
Reviewed-by: Bernd Schubert <bschubert@ddn.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
fs/fuse/file.c diff | blob | history
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