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ovl: port ovl_fallocate() to cred guard

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Use the scoped ovl cred guard.

Link: https://patch.msgid.link/20251117-work-ovl-cred-guard-v4-10-b31603935724@kernel.org
Reviewed-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Christian Brauner <brauner@kernel.org>
This commit is contained in:
Christian Brauner 2025-11-17 10:33:41 +01:00
parent 07a891c346
commit 2468017783
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GPG Key ID: 91C61BC06578DCA2
1 changed files with 2 additions and 4 deletions
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6
fs/overlayfs/file.c
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@ -479,7 +479,6 @@ static long ovl_fallocate(struct file *file, int mode, loff_t offset, loff_t len
{
struct inode *inode = file_inode(file);
struct file *realfile;
const struct cred *old_cred;
int ret;
inode_lock(inode);
@ -494,9 +493,8 @@ static long ovl_fallocate(struct file *file, int mode, loff_t offset, loff_t len
if (IS_ERR(realfile))
goto out_unlock;
old_cred = ovl_override_creds(file_inode(file)->i_sb);
ret = vfs_fallocate(realfile, mode, offset, len);
ovl_revert_creds(old_cred);
with_ovl_creds(inode->i_sb)
ret = vfs_fallocate(realfile, mode, offset, len);
/* Update size */
ovl_file_modified(file);