From: David Howells Date: Mon, 10 Feb 2020 10:00:21 +0000 (+0000) Subject: vfs: Provide S_KERNEL_FILE inode flag X-Git-Url: http://git-server-git.apps.pok.os.sepia.ceph.com/?a=commitdiff_plain;h=dfbef76b968055e2e4ab242a323dc3881953429b;p=ceph-client.git vfs: Provide S_KERNEL_FILE inode flag Provide an S_KERNEL_FILE inode flag that a kernel service, e.g. cachefiles, can set to ward off other kernel services and drivers (including itself) from using files it is actively using. Signed-off-by: David Howells --- diff --git a/include/linux/fs.h b/include/linux/fs.h index 473ea3ff0ad4..d4ec20f51129 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -2249,6 +2249,7 @@ struct super_operations { #define S_ENCRYPTED (1 << 14) /* Encrypted file (using fs/crypto/) */ #define S_CASEFOLD (1 << 15) /* Casefolded file */ #define S_VERITY (1 << 16) /* Verity file (using fs/verity/) */ +#define S_KERNEL_FILE (1 << 17) /* File is in use by the kernel (eg. fs/cachefiles) */ /* * Note that nosuid etc flags are inode-specific: setting some file-system