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| author | Amir Goldstein <amir73il@gmail.com> | 2019-01-10 19:04:38 +0200 |
|---|---|---|
| committer | Jan Kara <jack@suse.cz> | 2019-02-07 16:38:35 +0100 |
| commit | ec86ff5689ff9605e2d57e016098764ad9a2fee5 (patch) | |
| tree | f5676c9aaa576a90e51ff47ae4d9dfe64daae9f5 /fs/statfs.c | |
| parent | 77115225acc67d9ac4b15f04dd138006b9cd1ef2 (diff) | |
| download | lwn-ec86ff5689ff9605e2d57e016098764ad9a2fee5.tar.gz lwn-ec86ff5689ff9605e2d57e016098764ad9a2fee5.zip | |
vfs: add vfs_get_fsid() helper
Wrapper around statfs() interface.
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Diffstat (limited to 'fs/statfs.c')
| -rw-r--r-- | fs/statfs.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/fs/statfs.c b/fs/statfs.c index f0216629621d..eea7af6f2f22 100644 --- a/fs/statfs.c +++ b/fs/statfs.c @@ -67,6 +67,20 @@ static int statfs_by_dentry(struct dentry *dentry, struct kstatfs *buf) return retval; } +int vfs_get_fsid(struct dentry *dentry, __kernel_fsid_t *fsid) +{ + struct kstatfs st; + int error; + + error = statfs_by_dentry(dentry, &st); + if (error) + return error; + + *fsid = st.f_fsid; + return 0; +} +EXPORT_SYMBOL(vfs_get_fsid); + int vfs_statfs(const struct path *path, struct kstatfs *buf) { int error; |