diff mbox series

[RFC,-next,06/10] fs: Extend do_sendfile to take a flags argument

Message ID 20250319001521.53249-7-jdamato@fastly.com (mailing list archive)
State RFC
Headers show
Series Add ZC notifications to splice and sendfile | expand

Checks

Context Check Description
netdev/series_format success Posting correctly formatted
netdev/tree_selection success Guessed tree name to be net-next, async
netdev/ynl success Generated files up to date; no warnings/errors; no diff in generated;
netdev/fixes_present success Fixes tag not required for -next series
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 0 this patch: 0
netdev/build_tools success No tools touched, skip
netdev/cc_maintainers success CCed 4 of 4 maintainers
netdev/build_clang success Errors and warnings before: 0 this patch: 0
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/deprecated_api success None detected
netdev/check_selftest success No net selftest shell script
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 1 this patch: 1
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 68 lines checked
netdev/build_clang_rust success No Rust files in patch. Skipping build
netdev/kdoc success Errors and warnings before: 9 this patch: 9
netdev/source_inline success Was 0 now: 0

Commit Message

Joe Damato March 19, 2025, 12:15 a.m. UTC 
Extend the internal do_sendfile to take a flags argument, which will be
used in future commits to signal that userland wants zerocopy
notifications.

This commit does not change anything about sendfile or sendfile64.

Signed-off-by: Joe Damato <jdamato@fastly.com>
---
 fs/read_write.c | 18 +++++++++---------
 1 file changed, 9 insertions(+), 9 deletions(-)
diff mbox series

Patch

diff --git a/fs/read_write.c b/fs/read_write.c
index a6133241dfb8..03d2a93c3d1b 100644
--- a/fs/read_write.c
+++ b/fs/read_write.c
@@ -1293,7 +1293,7 @@  COMPAT_SYSCALL_DEFINE6(pwritev2, compat_ulong_t, fd,
 #endif /* CONFIG_COMPAT */
 
 static ssize_t do_sendfile(int out_fd, int in_fd, loff_t *ppos,
-			   size_t count, loff_t max)
+			   size_t count, loff_t max, int flags)
 {
 	struct inode *in_inode, *out_inode;
 	struct pipe_inode_info *opipe;
@@ -1398,13 +1398,13 @@  SYSCALL_DEFINE4(sendfile, int, out_fd, int, in_fd, off_t __user *, offset, size_
 		if (unlikely(get_user(off, offset)))
 			return -EFAULT;
 		pos = off;
-		ret = do_sendfile(out_fd, in_fd, &pos, count, MAX_NON_LFS);
+		ret = do_sendfile(out_fd, in_fd, &pos, count, MAX_NON_LFS, 0);
 		if (unlikely(put_user(pos, offset)))
 			return -EFAULT;
 		return ret;
 	}
 
-	return do_sendfile(out_fd, in_fd, NULL, count, 0);
+	return do_sendfile(out_fd, in_fd, NULL, count, 0, 0);
 }
 
 SYSCALL_DEFINE4(sendfile64, int, out_fd, int, in_fd, loff_t __user *, offset, size_t, count)
@@ -1415,13 +1415,13 @@  SYSCALL_DEFINE4(sendfile64, int, out_fd, int, in_fd, loff_t __user *, offset, si
 	if (offset) {
 		if (unlikely(copy_from_user(&pos, offset, sizeof(loff_t))))
 			return -EFAULT;
-		ret = do_sendfile(out_fd, in_fd, &pos, count, 0);
+		ret = do_sendfile(out_fd, in_fd, &pos, count, 0, 0);
 		if (unlikely(put_user(pos, offset)))
 			return -EFAULT;
 		return ret;
 	}
 
-	return do_sendfile(out_fd, in_fd, NULL, count, 0);
+	return do_sendfile(out_fd, in_fd, NULL, count, 0, 0);
 }
 
 #ifdef CONFIG_COMPAT
@@ -1436,13 +1436,13 @@  COMPAT_SYSCALL_DEFINE4(sendfile, int, out_fd, int, in_fd,
 		if (unlikely(get_user(off, offset)))
 			return -EFAULT;
 		pos = off;
-		ret = do_sendfile(out_fd, in_fd, &pos, count, MAX_NON_LFS);
+		ret = do_sendfile(out_fd, in_fd, &pos, count, MAX_NON_LFS, 0);
 		if (unlikely(put_user(pos, offset)))
 			return -EFAULT;
 		return ret;
 	}
 
-	return do_sendfile(out_fd, in_fd, NULL, count, 0);
+	return do_sendfile(out_fd, in_fd, NULL, count, 0, 0);
 }
 
 COMPAT_SYSCALL_DEFINE4(sendfile64, int, out_fd, int, in_fd,
@@ -1454,13 +1454,13 @@  COMPAT_SYSCALL_DEFINE4(sendfile64, int, out_fd, int, in_fd,
 	if (offset) {
 		if (unlikely(copy_from_user(&pos, offset, sizeof(loff_t))))
 			return -EFAULT;
-		ret = do_sendfile(out_fd, in_fd, &pos, count, 0);
+		ret = do_sendfile(out_fd, in_fd, &pos, count, 0, 0);
 		if (unlikely(put_user(pos, offset)))
 			return -EFAULT;
 		return ret;
 	}
 
-	return do_sendfile(out_fd, in_fd, NULL, count, 0);
+	return do_sendfile(out_fd, in_fd, NULL, count, 0, 0);
 }
 #endif