diff options
| author | Maxim Patlasov <mpatlasov@parallels.com> | 2012-10-26 19:48:07 +0400 |
|---|---|---|
| committer | Miklos Szeredi <mszeredi@suse.cz> | 2013-01-24 16:21:25 +0100 |
| commit | 4250c0668ea10a19f3d37b1733f54ce6c8a37234 (patch) | |
| tree | 4f0e6bd382fa5c9cba0d584298c38b19bcdd1841 /fs/fuse/fuse_i.h | |
| parent | 0b05b18381eea98c9c9ada95629bf659a88c9374 (diff) | |
| download | blackbird-op-linux-4250c0668ea10a19f3d37b1733f54ce6c8a37234.tar.gz blackbird-op-linux-4250c0668ea10a19f3d37b1733f54ce6c8a37234.zip | |
fuse: general infrastructure for pages[] of variable size
The patch removes inline array of FUSE_MAX_PAGES_PER_REQ page pointers from
fuse_req. Instead of that, req->pages may now point either to small inline
array or to an array allocated dynamically.
This essentially means that all callers of fuse_request_alloc[_nofs] should
pass the number of pages needed explicitly.
The patch doesn't make any logic changes.
Signed-off-by: Maxim Patlasov <mpatlasov@parallels.com>
Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
Diffstat (limited to 'fs/fuse/fuse_i.h')
| -rw-r--r-- | fs/fuse/fuse_i.h | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/fs/fuse/fuse_i.h b/fs/fuse/fuse_i.h index 5c5055306d3c..0c5b9310f930 100644 --- a/fs/fuse/fuse_i.h +++ b/fs/fuse/fuse_i.h @@ -44,6 +44,9 @@ doing the mount will be allowed to access the filesystem */ #define FUSE_ALLOW_OTHER (1 << 1) +/** Number of page pointers embedded in fuse_req */ +#define FUSE_REQ_INLINE_PAGES 1 + /** List of active connections */ extern struct list_head fuse_conn_list; @@ -291,7 +294,13 @@ struct fuse_req { } misc; /** page vector */ - struct page *pages[FUSE_MAX_PAGES_PER_REQ]; + struct page **pages; + + /** size of the 'pages' array */ + unsigned max_pages; + + /** inline page vector */ + struct page *inline_pages[FUSE_REQ_INLINE_PAGES]; /** number of pages in vector */ unsigned num_pages; @@ -664,9 +673,9 @@ void fuse_ctl_cleanup(void); /** * Allocate a request */ -struct fuse_req *fuse_request_alloc(void); +struct fuse_req *fuse_request_alloc(unsigned npages); -struct fuse_req *fuse_request_alloc_nofs(void); +struct fuse_req *fuse_request_alloc_nofs(unsigned npages); /** * Free a request |
