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| author |   Luis Henriques <lhenriques@suse.com> | 2018-01-05 10:47:19 +0000 |
|---|---|---|
| committer |   Ilya Dryomov <idryomov@gmail.com> | 2018-04-02 11:17:51 +0200 |
| commit | b7a2921765cf796280baf653a52b22b52e0ba266 (patch) | |
| tree | a7c6aad0d8aac1da1789b09c37a1852ef65c9c5c /fs/ceph/dir.c | |
| parent | ceph: quota: add initial infrastructure to support cephfs quotas (diff) | |
| download | linux-dev-b7a2921765cf796280baf653a52b22b52e0ba266.tar.xz linux-dev-b7a2921765cf796280baf653a52b22b52e0ba266.zip | |
ceph: quota: support for ceph.quota.max_files
This patch adds support for the max_files quota. It hooks into all the
ceph functions that add new filesystem objects that need to be checked
against the quota limits. When these limits are hit, -EDQUOT is returned.
Note that we're not checking quotas on ceph_link(). ceph_link doesn't
really create a new inode, and since the MDS doesn't update the directory
statistics when a new (hard) link is created (only with symlinks), they
are not accounted as a new file.
Signed-off-by: Luis Henriques <lhenriques@suse.com>
Reviewed-by: "Yan, Zheng" <zyan@redhat.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Diffstat (limited to 'fs/ceph/dir.c')
| -rw-r--r-- | fs/ceph/dir.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/fs/ceph/dir.c b/fs/ceph/dir.c index 16405e0774a6..7d9851cd51bb 100644 --- a/fs/ceph/dir.c +++ b/fs/ceph/dir.c @@ -828,6 +828,9 @@ static int ceph_mknod(struct inode *dir, struct dentry *dentry, if (ceph_snap(dir) != CEPH_NOSNAP) return -EROFS; + if (ceph_quota_is_max_files_exceeded(dir)) + return -EDQUOT; + err = ceph_pre_init_acls(dir, &mode, &acls); if (err < 0) return err; @@ -881,6 +884,9 @@ static int ceph_symlink(struct inode *dir, struct dentry *dentry, if (ceph_snap(dir) != CEPH_NOSNAP) return -EROFS; + if (ceph_quota_is_max_files_exceeded(dir)) + return -EDQUOT; + dout("symlink in dir %p dentry %p to '%s'\n", dir, dentry, dest); req = ceph_mdsc_create_request(mdsc, CEPH_MDS_OP_SYMLINK, USE_AUTH_MDS); if (IS_ERR(req)) { @@ -930,6 +936,11 @@ static int ceph_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode) goto out; } + if (ceph_quota_is_max_files_exceeded(dir)) { + err = -EDQUOT; + goto out; + } + mode |= S_IFDIR; err = ceph_pre_init_acls(dir, &mode, &acls); if (err < 0) |