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authorMiklos Szeredi <mszeredi@suse.cz>2007-10-18 03:07:03 -0700
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-10-18 14:37:31 -0700
commit93a8c3cd9e9834dc5f5c373336f3a0065521152d (patch)
treece8731adbf7a2bcd441e8b82d3d932abf94b13df /fs/fuse/inode.c
parenta9ff4f87056cd31a8232b88d013dc6c9ad719c18 (diff)
downloadop-kernel-dev-93a8c3cd9e9834dc5f5c373336f3a0065521152d.zip
op-kernel-dev-93a8c3cd9e9834dc5f5c373336f3a0065521152d.tar.gz
fuse: add list of writable files to fuse_inode
Each WRITE request must carry a valid file descriptor. When a page is written back from a memory mapping, the file through which the page was dirtied is not available, so a new mechananism is needed to find a suitable file in ->writepage(s). A list of fuse_files is added to fuse_inode. The file is removed from the list in fuse_release(). 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/inode.c')
-rw-r--r--fs/fuse/inode.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/fuse/inode.c b/fs/fuse/inode.c
index 3c13981..49d7160 100644
--- a/fs/fuse/inode.c
+++ b/fs/fuse/inode.c
@@ -56,6 +56,7 @@ static struct inode *fuse_alloc_inode(struct super_block *sb)
fi->i_time = 0;
fi->nodeid = 0;
fi->nlookup = 0;
+ INIT_LIST_HEAD(&fi->write_files);
fi->forget_req = fuse_request_alloc();
if (!fi->forget_req) {
kmem_cache_free(fuse_inode_cachep, inode);
@@ -68,6 +69,7 @@ static struct inode *fuse_alloc_inode(struct super_block *sb)
static void fuse_destroy_inode(struct inode *inode)
{
struct fuse_inode *fi = get_fuse_inode(inode);
+ BUG_ON(!list_empty(&fi->write_files));
if (fi->forget_req)
fuse_request_free(fi->forget_req);
kmem_cache_free(fuse_inode_cachep, inode);
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