| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Date: Fri, 28 Dec 2007 15:42:57 -0500 From: Erez Zadok <ezk@...sunysb.edu> To: akpm@...ux-foundation.org Cc: linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org, viro@....linux.org.uk, hch@...radead.org, Erez Zadok <ezk@...sunysb.edu> Subject: [PATCH 23/30] Unionfs: set our superblock a/m/ctime granularity Set it to 1 ns, because we could be stacked on top of file systems with such granularity. Signed-off-by: Erez Zadok <ezk@...sunysb.edu> --- fs/unionfs/main.c | 7 +++++++ 1 files changed, 7 insertions(+), 0 deletions(-) diff --git a/fs/unionfs/main.c b/fs/unionfs/main.c index 92f0e9d..23c18f7 100644 --- a/fs/unionfs/main.c +++ b/fs/unionfs/main.c @@ -642,6 +642,13 @@ static int unionfs_read_super(struct super_block *sb, void *raw_data, /* max Bytes is the maximum bytes from highest priority branch */ sb->s_maxbytes = unionfs_lower_super_idx(sb, 0)->s_maxbytes; + /* + * Our c/m/atime granularity is 1 ns because we may stack on file + * systems whose granularity is as good. This is important for our + * time-based cache coherency. + */ + sb->s_time_gran = 1; + sb->s_op = &unionfs_sops; /* See comment next to the definition of unionfs_d_alloc_root */ -- 1.5.2.2 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists