diff options
| author |   Miklos Szeredi <mszeredi@suse.cz> | 2007-10-18 03:07:03 -0700 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-10-18 14:37:31 -0700 |
| commit | b25e82e5673c750116e8b01a4fc7d09be7809f8c (patch) | |
| tree | 03d23ccbca6e87ba98efeba445ff714455dba0bb /fs/fuse | |
| parent | fuse: add list of writable files to fuse_inode (diff) | |
| download | linux-dev-b25e82e5673c750116e8b01a4fc7d09be7809f8c.tar.xz linux-dev-b25e82e5673c750116e8b01a4fc7d09be7809f8c.zip | |
fuse: add helper for asynchronous writes
This patch adds a new helper function fuse_write_fill() which makes it
possible to send WRITE requests asynchronously.
A new flag for WRITE requests is also added which indicates that this a write
from the page cache, and not a "normal" file write.
This patch is in preparation for writable mmap support.
Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/fuse')
| -rw-r--r-- | fs/fuse/file.c | 33 | ||||
| -rw-r--r-- | fs/fuse/fuse_i.h | 4 |
2 files changed, 24 insertions, 13 deletions
diff --git a/fs/fuse/file.c b/fs/fuse/file.c index c4c59c7d0038..2b589de044e8 100644 --- a/fs/fuse/file.c +++ b/fs/fuse/file.c @@ -443,30 +443,37 @@ out: return err; } -static size_t fuse_send_write(struct fuse_req *req, struct file *file, - struct inode *inode, loff_t pos, size_t count) +static void fuse_write_fill(struct fuse_req *req, struct fuse_file *ff, + struct inode *inode, loff_t pos, size_t count, + int writepage) { - struct fuse_conn *fc = get_fuse_conn(inode); - struct fuse_file *ff = file->private_data; - struct fuse_write_in inarg; - struct fuse_write_out outarg; + struct fuse_write_in *inarg = &req->misc.write.in; + struct fuse_write_out *outarg = &req->misc.write.out; - memset(&inarg, 0, sizeof(struct fuse_write_in)); - inarg.fh = ff->fh; - inarg.offset = pos; - inarg.size = count; + memset(inarg, 0, sizeof(struct fuse_write_in)); + inarg->fh = ff->fh; + inarg->offset = pos; + inarg->size = count; + inarg->write_flags = writepage ? FUSE_WRITE_CACHE : 0; req->in.h.opcode = FUSE_WRITE; req->in.h.nodeid = get_node_id(inode); req->in.argpages = 1; req->in.numargs = 2; req->in.args[0].size = sizeof(struct fuse_write_in); - req->in.args[0].value = &inarg; + req->in.args[0].value = inarg; req->in.args[1].size = count; req->out.numargs = 1; req->out.args[0].size = sizeof(struct fuse_write_out); - req->out.args[0].value = &outarg; + req->out.args[0].value = outarg; +} + +static size_t fuse_send_write(struct fuse_req *req, struct file *file, + struct inode *inode, loff_t pos, size_t count) +{ + struct fuse_conn *fc = get_fuse_conn(inode); + fuse_write_fill(req, file->private_data, inode, pos, count, 0); request_send(fc, req); - return outarg.size; + return req->misc.write.out.size; } static int fuse_write_begin(struct file *file, struct address_space *mapping, diff --git a/fs/fuse/fuse_i.h b/fs/fuse/fuse_i.h index 5657cca0d0cb..8b64a630e758 100644 --- a/fs/fuse/fuse_i.h +++ b/fs/fuse/fuse_i.h @@ -219,6 +219,10 @@ struct fuse_req { struct fuse_init_in init_in; struct fuse_init_out init_out; struct fuse_read_in read_in; + struct { + struct fuse_write_in in; + struct fuse_write_out out; + } write; struct fuse_lk_in lk_in; } misc; |