From b3cbea03b4edbd6b625dbf813bf8c30c22213cb7 Mon Sep 17 00:00:00 2001 From: "Aneesh Kumar K.V" Date: Mon, 28 Feb 2011 17:04:06 +0530 Subject: fs/9p: Add support for marking inode attribute invalid With cached mode some of the file system operation result in updating inode attributes (ctime). Add support for marking inode attribute invalid in such cases so that we fetch the updated inode attribute on dentry revalidation. Signed-off-by: Aneesh Kumar K.V Signed-off-by: Venkateswararao Jujjuri Signed-off-by: Eric Van Hensbergen --- fs/9p/vfs_inode_dotl.c | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) (limited to 'fs/9p/vfs_inode_dotl.c') diff --git a/fs/9p/vfs_inode_dotl.c b/fs/9p/vfs_inode_dotl.c index c6d9677dcb6..5c04d66afb1 100644 --- a/fs/9p/vfs_inode_dotl.c +++ b/fs/9p/vfs_inode_dotl.c @@ -484,6 +484,7 @@ int v9fs_vfs_setattr_dotl(struct dentry *dentry, struct iattr *iattr) void v9fs_stat2inode_dotl(struct p9_stat_dotl *stat, struct inode *inode) { + struct v9fs_inode *v9inode = V9FS_I(inode); if ((stat->st_result_mask & P9_STATS_BASIC) == P9_STATS_BASIC) { inode->i_atime.tv_sec = stat->st_atime_sec; @@ -542,6 +543,7 @@ v9fs_stat2inode_dotl(struct p9_stat_dotl *stat, struct inode *inode) /* Currently we don't support P9_STATS_BTIME and P9_STATS_DATA_VERSION * because the inode structure does not have fields for them. */ + v9inode->cache_validity &= ~V9FS_INO_INVALID_ATTR; } static int @@ -822,6 +824,31 @@ ndset: return NULL; } +int v9fs_refresh_inode_dotl(struct p9_fid *fid, struct inode *inode) +{ + loff_t i_size; + struct p9_stat_dotl *st; + struct v9fs_session_info *v9ses; + + v9ses = v9fs_inode2v9ses(inode); + st = p9_client_getattr_dotl(fid, P9_STATS_ALL); + if (IS_ERR(st)) + return PTR_ERR(st); + + spin_lock(&inode->i_lock); + /* + * We don't want to refresh inode->i_size, + * because we may have cached data + */ + i_size = inode->i_size; + v9fs_stat2inode_dotl(st, inode); + if (v9ses->cache) + inode->i_size = i_size; + spin_unlock(&inode->i_lock); + kfree(st); + return 0; +} + const struct inode_operations v9fs_dir_inode_operations_dotl = { .create = v9fs_vfs_create_dotl, .lookup = v9fs_vfs_lookup, -- cgit v1.2.3-18-g5258