X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=fs%2Ffuse%2Ffile.c;h=67ff2c6a8f6309bc09746a65d29b8d55f0a90bb5;hb=996abf053eec4d67136be8b911bbaaf989cfb99c;hp=9ced35b006867e1445af3f9fe010906ac0684f87;hpb=5559b8f4d1f630b8614b6c8e13b8bf6c9c45d7d7;p=linux-2.6

diff --git a/fs/fuse/file.c b/fs/fuse/file.c
index 9ced35b006..67ff2c6a8f 100644
--- a/fs/fuse/file.c
+++ b/fs/fuse/file.c
@@ -804,6 +804,8 @@ static ssize_t fuse_fill_write_pages(struct fuse_req *req,
 		if (offset == PAGE_CACHE_SIZE)
 			offset = 0;
 
+		if (!fc->big_writes)
+			break;
 	} while (iov_iter_count(ii) && count < fc->max_write &&
 		 req->num_pages < FUSE_MAX_PAGES_PER_REQ && offset == 0);
 
@@ -934,7 +936,7 @@ static int fuse_get_user_pages(struct fuse_req *req, const char __user *buf,
 
 	nbytes = min(nbytes, (unsigned) FUSE_MAX_PAGES_PER_REQ << PAGE_SHIFT);
 	npages = (nbytes + offset + PAGE_SIZE - 1) >> PAGE_SHIFT;
-	npages = min(max(npages, 1), FUSE_MAX_PAGES_PER_REQ);
+	npages = clamp(npages, 1, FUSE_MAX_PAGES_PER_REQ);
 	down_read(&current->mm->mmap_sem);
 	npages = get_user_pages(current, current->mm, user_addr, npages, write,
 				0, req->pages, NULL);
@@ -1339,6 +1341,11 @@ static int fuse_setlk(struct file *file, struct file_lock *fl, int flock)
 	pid_t pid = fl->fl_type != F_UNLCK ? current->tgid : 0;
 	int err;
 
+	if (fl->fl_lmops && fl->fl_lmops->fl_grant) {
+		/* NLM needs asynchronous locks, which we don't support yet */
+		return -ENOLCK;
+	}
+
 	/* Unlock on close is handled by the flush method */
 	if (fl->fl_flags & FL_CLOSE)
 		return 0;
@@ -1363,7 +1370,9 @@ static int fuse_file_lock(struct file *file, int cmd, struct file_lock *fl)
 	struct fuse_conn *fc = get_fuse_conn(inode);
 	int err;
 
-	if (cmd == F_GETLK) {
+	if (cmd == F_CANCELLK) {
+		err = 0;
+	} else if (cmd == F_GETLK) {
 		if (fc->no_lock) {
 			posix_test_lock(file, fl);
 			err = 0;
@@ -1371,7 +1380,7 @@ static int fuse_file_lock(struct file *file, int cmd, struct file_lock *fl)
 			err = fuse_getlk(file, fl);
 	} else {
 		if (fc->no_lock)
-			err = posix_lock_file_wait(file, fl);
+			err = posix_lock_file(file, fl, NULL);
 		else
 			err = fuse_setlk(file, fl, 0);
 	}