diff options
| -rw-r--r-- | fs/fuse/file.c | 9 | ||||
| -rw-r--r-- | fs/fuse/fuse_i.h | 3 | ||||
| -rw-r--r-- | fs/fuse/inode.c | 14 | ||||
| -rw-r--r-- | include/linux/fuse.h | 16 |
4 files changed, 36 insertions, 6 deletions
diff --git a/fs/fuse/file.c b/fs/fuse/file.c index a7ef5e7..2963516 100644 --- a/fs/fuse/file.c +++ b/fs/fuse/file.c @@ -335,9 +335,14 @@ static void fuse_send_readpages(struct fuse_req *req, struct file *file, loff_t pos = page_offset(req->pages[0]); size_t count = req->num_pages << PAGE_CACHE_SHIFT; req->out.page_zeroing = 1; - req->end = fuse_readpages_end; fuse_read_fill(req, file, inode, pos, count, FUSE_READ); - request_send_background(fc, req); + if (fc->async_read) { + req->end = fuse_readpages_end; + request_send_background(fc, req); + } else { + request_send(fc, req); + fuse_readpages_end(fc, req); + } } struct fuse_readpages_data { diff --git a/fs/fuse/fuse_i.h b/fs/fuse/fuse_i.h index 46cf933..4a83adf 100644 --- a/fs/fuse/fuse_i.h +++ b/fs/fuse/fuse_i.h @@ -272,6 +272,9 @@ struct fuse_conn { reply, before any other request, and never cleared */ unsigned conn_error : 1; + /** Do readpages asynchronously? Only set in INIT */ + unsigned async_read : 1; + /* * The following bitfields are only for optimization purposes * and hence races in setting them will not cause malfunction diff --git a/fs/fuse/inode.c b/fs/fuse/inode.c index c755a04..879e6fb 100644 --- a/fs/fuse/inode.c +++ b/fs/fuse/inode.c @@ -473,6 +473,16 @@ static void process_init_reply(struct fuse_conn *fc, struct fuse_req *req) if (req->out.h.error || arg->major != FUSE_KERNEL_VERSION) fc->conn_error = 1; else { + unsigned long ra_pages; + + if (arg->minor >= 6) { + ra_pages = arg->max_readahead / PAGE_CACHE_SIZE; + if (arg->flags & FUSE_ASYNC_READ) + fc->async_read = 1; + } else + ra_pages = fc->max_read / PAGE_CACHE_SIZE; + + fc->bdi.ra_pages = min(fc->bdi.ra_pages, ra_pages); fc->minor = arg->minor; fc->max_write = arg->minor < 5 ? 4096 : arg->max_write; } @@ -496,6 +506,8 @@ static void fuse_send_init(struct fuse_conn *fc) arg->major = FUSE_KERNEL_VERSION; arg->minor = FUSE_KERNEL_MINOR_VERSION; + arg->max_readahead = fc->bdi.ra_pages * PAGE_CACHE_SIZE; + arg->flags |= FUSE_ASYNC_READ; req->in.h.opcode = FUSE_INIT; req->in.numargs = 1; req->in.args[0].size = sizeof(*arg); @@ -552,8 +564,6 @@ static int fuse_fill_super(struct super_block *sb, void *data, int silent) fc->user_id = d.user_id; fc->group_id = d.group_id; fc->max_read = d.max_read; - if (fc->max_read / PAGE_CACHE_SIZE < fc->bdi.ra_pages) - fc->bdi.ra_pages = fc->max_read / PAGE_CACHE_SIZE; /* Used by get_root_inode() */ sb->s_fs_info = fc; diff --git a/include/linux/fuse.h b/include/linux/fuse.h index 528959c..5425b60 100644 --- a/include/linux/fuse.h +++ b/include/linux/fuse.h @@ -14,7 +14,7 @@ #define FUSE_KERNEL_VERSION 7 /** Minor version number of this interface */ -#define FUSE_KERNEL_MINOR_VERSION 5 +#define FUSE_KERNEL_MINOR_VERSION 6 /** The node ID of the root inode */ #define FUSE_ROOT_ID 1 @@ -58,6 +58,9 @@ struct fuse_kstatfs { __u32 spare[6]; }; +/** + * Bitmasks for fuse_setattr_in.valid + */ #define FATTR_MODE (1 << 0) #define FATTR_UID (1 << 1) #define FATTR_GID (1 << 2) @@ -75,6 +78,11 @@ struct fuse_kstatfs { #define FOPEN_DIRECT_IO (1 << 0) #define FOPEN_KEEP_CACHE (1 << 1) +/** + * INIT request/reply flags + */ +#define FUSE_ASYNC_READ (1 << 0) + enum fuse_opcode { FUSE_LOOKUP = 1, FUSE_FORGET = 2, /* no reply */ @@ -247,12 +255,16 @@ struct fuse_access_in { struct fuse_init_in { __u32 major; __u32 minor; + __u32 max_readahead; + __u32 flags; }; struct fuse_init_out { __u32 major; __u32 minor; - __u32 unused[3]; + __u32 max_readahead; + __u32 flags; + __u32 unused; __u32 max_write; }; |