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| author |   Miklos Szeredi <miklos@szeredi.hu> | 2006-04-10 22:54:55 -0700 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@g5.osdl.org> | 2006-04-11 06:18:48 -0700 |
| commit | 0720b315976447cba3f0c3e211223b8cb82b0f93 (patch) | |
| tree | b8013f53bca7a72670961ea6f439612d1c631283 /fs/fuse/fuse_i.h | |
| parent | [PATCH] fuse: add O_NONBLOCK support to FUSE device (diff) | |
| download | linux-dev-0720b315976447cba3f0c3e211223b8cb82b0f93.tar.xz linux-dev-0720b315976447cba3f0c3e211223b8cb82b0f93.zip | |
[PATCH] fuse: simplify locking
This is in preparation for removing the global spinlock in favor of a
per-mount one.
The only critical part is the interaction between fuse_dev_release() and
fuse_fill_super(): fuse_dev_release() must see the assignment to
file->private_data, otherwise it will leak the reference to fuse_conn.
This is ensured by the fput() operation, which will synchronize the assignment
with other CPU's that may do a final fput() soon after this.
Also redundant locking is removed from fuse_fill_super(), where exclusion is
already ensured by the BKL held for this function by the VFS.
Signed-off-by: Miklos Szeredi <miklos@szeredi.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'fs/fuse/fuse_i.h')
0 files changed, 0 insertions, 0 deletions