diff options
| author | Miklos Szeredi <mszeredi@redhat.com> | 2016-06-30 13:10:49 +0200 |
|---|---|---|
| committer | Miklos Szeredi <mszeredi@redhat.com> | 2016-06-30 13:10:49 +0200 |
| commit | 5c672ab3f0ee0f78f7acad183f34db0f8781a200 (patch) | |
| tree | 8504dad9b399cbef1a3e252c7253325d51740eae /fs/fuse/dir.c | |
| parent | Linux 4.7-rc5 (diff) | |
| download | linux-5c672ab3f0ee0f78f7acad183f34db0f8781a200.tar.xz linux-5c672ab3f0ee0f78f7acad183f34db0f8781a200.zip | |
fuse: serialize dirops by default
Negotiate with userspace filesystems whether they support parallel readdir
and lookup. Disable parallelism by default for fear of breaking fuse
filesystems.
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Fixes: 9902af79c01a ("parallel lookups: actual switch to rwsem")
Fixes: d9b3dbdcfd62 ("fuse: switch to ->iterate_shared()")
Diffstat (limited to 'fs/fuse/dir.c')
| -rw-r--r-- | fs/fuse/dir.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/fs/fuse/dir.c b/fs/fuse/dir.c index ccd4971cc6c1..264f07c7754e 100644 --- a/fs/fuse/dir.c +++ b/fs/fuse/dir.c @@ -341,8 +341,10 @@ static struct dentry *fuse_lookup(struct inode *dir, struct dentry *entry, struct dentry *newent; bool outarg_valid = true; + fuse_lock_inode(dir); err = fuse_lookup_name(dir->i_sb, get_node_id(dir), &entry->d_name, &outarg, &inode); + fuse_unlock_inode(dir); if (err == -ENOENT) { outarg_valid = false; err = 0; @@ -1341,7 +1343,9 @@ static int fuse_readdir(struct file *file, struct dir_context *ctx) fuse_read_fill(req, file, ctx->pos, PAGE_SIZE, FUSE_READDIR); } + fuse_lock_inode(inode); fuse_request_send(fc, req); + fuse_unlock_inode(inode); nbytes = req->out.args[0].size; err = req->out.h.error; fuse_put_request(fc, req); |