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| author | Maxim Patlasov <mpatlasov@parallels.com> | 2013-03-21 18:02:04 +0400 |
|---|---|---|
| committer | Miklos Szeredi <mszeredi@suse.cz> | 2013-04-17 12:31:44 +0200 |
| commit | 8b41e6715ed555e2d8e8dac52ec1f05a9f04dcb4 (patch) | |
| tree | a3302435ed781462e1780b89e4ac5e9833158cb0 /fs/fuse/file.c | |
| parent | 4c82456eeb4da081dd63dc69e91aa6deabd29e03 (diff) | |
| download | lwn-8b41e6715ed555e2d8e8dac52ec1f05a9f04dcb4.tar.gz lwn-8b41e6715ed555e2d8e8dac52ec1f05a9f04dcb4.zip | |
fuse: make request allocations for background processing explicit
There are two types of processing requests in FUSE: synchronous (via
fuse_request_send()) and asynchronous (via adding to fc->bg_queue).
Fortunately, the type of processing is always known in advance, at the time
of request allocation. This preparatory patch utilizes this fact making
fuse_get_req() aware about the type. Next patches will use it.
Signed-off-by: Maxim Patlasov <mpatlasov@parallels.com>
Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
Diffstat (limited to 'fs/fuse/file.c')
| -rw-r--r-- | fs/fuse/file.c | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/fs/fuse/file.c b/fs/fuse/file.c index 34b80ba95bad..4884790b9639 100644 --- a/fs/fuse/file.c +++ b/fs/fuse/file.c @@ -126,11 +126,13 @@ static void fuse_file_put(struct fuse_file *ff, bool sync) struct fuse_req *req = ff->reserved_req; if (sync) { + req->background = 0; fuse_request_send(ff->fc, req); path_put(&req->misc.release.path); fuse_put_request(ff->fc, req); } else { req->end = fuse_release_end; + req->background = 1; fuse_request_send_background(ff->fc, req); } kfree(ff); @@ -282,6 +284,7 @@ void fuse_sync_release(struct fuse_file *ff, int flags) WARN_ON(atomic_read(&ff->count) > 1); fuse_prepare_release(ff, flags, FUSE_RELEASE); ff->reserved_req->force = 1; + ff->reserved_req->background = 0; fuse_request_send(ff->fc, ff->reserved_req); fuse_put_request(ff->fc, ff->reserved_req); kfree(ff); @@ -661,7 +664,12 @@ static int fuse_readpages_fill(void *_data, struct page *page) int nr_alloc = min_t(unsigned, data->nr_pages, FUSE_MAX_PAGES_PER_REQ); fuse_send_readpages(req, data->file); - data->req = req = fuse_get_req(fc, nr_alloc); + if (fc->async_read) + req = fuse_get_req_for_background(fc, nr_alloc); + else + req = fuse_get_req(fc, nr_alloc); + + data->req = req; if (IS_ERR(req)) { unlock_page(page); return PTR_ERR(req); @@ -696,7 +704,10 @@ static int fuse_readpages(struct file *file, struct address_space *mapping, data.file = file; data.inode = inode; - data.req = fuse_get_req(fc, nr_alloc); + if (fc->async_read) + data.req = fuse_get_req_for_background(fc, nr_alloc); + else + data.req = fuse_get_req(fc, nr_alloc); data.nr_pages = nr_pages; err = PTR_ERR(data.req); if (IS_ERR(data.req)) @@ -1375,6 +1386,7 @@ static int fuse_writepage_locked(struct page *page) if (!req) goto err; + req->background = 1; /* writeback always goes to bg_queue */ tmp_page = alloc_page(GFP_NOFS | __GFP_HIGHMEM); if (!tmp_page) goto err_free; |