From bac0a9e56e1fd14b227ab57142eca6f7bc6e6115 Mon Sep 17 00:00:00 2001 From: Christian Brauner Date: Thu, 8 Feb 2024 19:10:45 +0100 Subject: file: add alloc_file_pseudo_noaccount() When we open block devices as files we want to make sure to not charge them against the open file limit of the caller as that can cause spurious failures. Link: https://lore.kernel.org/r/20240123-vfs-bdev-file-v2-1-adbd023e19cc@kernel.org Signed-off-by: Christian Brauner --- fs/file_table.c | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) (limited to 'fs/file_table.c') diff --git a/fs/file_table.c b/fs/file_table.c index a94adac3d907..6925522faa0a 100644 --- a/fs/file_table.c +++ b/fs/file_table.c @@ -357,6 +357,30 @@ struct file *alloc_file_pseudo(struct inode *inode, struct vfsmount *mnt, } EXPORT_SYMBOL(alloc_file_pseudo); +struct file *alloc_file_pseudo_noaccount(struct inode *inode, + struct vfsmount *mnt, const char *name, + int flags, + const struct file_operations *fops) +{ + int ret; + struct path path; + struct file *file; + + ret = alloc_path_pseudo(name, inode, mnt, &path); + if (ret) + return ERR_PTR(ret); + + file = alloc_empty_file_noaccount(flags, current_cred()); + if (IS_ERR(file)) { + ihold(inode); + path_put(&path); + return file; + } + file_init_path(file, &path, fops); + return file; +} +EXPORT_SYMBOL_GPL(alloc_file_pseudo_noaccount); + struct file *alloc_file_clone(struct file *base, int flags, const struct file_operations *fops) { -- cgit v1.2.3