diff options
| -rw-r--r-- | Documentation/filesystems/ceph.txt | 5 | ||||
| -rw-r--r-- | fs/ceph/file.c | 3 | ||||
| -rw-r--r-- | fs/ceph/super.c | 13 | ||||
| -rw-r--r-- | fs/ceph/super.h | 1 |
4 files changed, 22 insertions, 0 deletions
diff --git a/Documentation/filesystems/ceph.txt b/Documentation/filesystems/ceph.txt index 8bf62240e10d..1177052701e1 100644 --- a/Documentation/filesystems/ceph.txt +++ b/Documentation/filesystems/ceph.txt @@ -151,6 +151,11 @@ Mount Options Report overall filesystem usage in statfs instead of using the root directory quota. + nocopyfrom + Don't use the RADOS 'copy-from' operation to perform remote object + copies. Currently, it's only used in copy_file_range, which will revert + to the default VFS implementation if this option is used. + More Information ================ diff --git a/fs/ceph/file.c b/fs/ceph/file.c index 5557ec6760ea..f788496fafcc 100644 --- a/fs/ceph/file.c +++ b/fs/ceph/file.c @@ -1917,6 +1917,9 @@ static ssize_t ceph_copy_file_range(struct file *src_file, loff_t src_off, * efficient). */ + if (ceph_test_mount_opt(ceph_inode_to_client(src_inode), NOCOPYFROM)) + return -EOPNOTSUPP; + if ((src_ci->i_layout.stripe_unit != dst_ci->i_layout.stripe_unit) || (src_ci->i_layout.stripe_count != dst_ci->i_layout.stripe_count) || (src_ci->i_layout.object_size != dst_ci->i_layout.object_size)) diff --git a/fs/ceph/super.c b/fs/ceph/super.c index eab1359d0553..b5ecd6f50360 100644 --- a/fs/ceph/super.c +++ b/fs/ceph/super.c @@ -165,6 +165,8 @@ enum { Opt_noacl, Opt_quotadf, Opt_noquotadf, + Opt_copyfrom, + Opt_nocopyfrom, }; static match_table_t fsopt_tokens = { @@ -203,6 +205,8 @@ static match_table_t fsopt_tokens = { {Opt_noacl, "noacl"}, {Opt_quotadf, "quotadf"}, {Opt_noquotadf, "noquotadf"}, + {Opt_copyfrom, "copyfrom"}, + {Opt_nocopyfrom, "nocopyfrom"}, {-1, NULL} }; @@ -355,6 +359,12 @@ static int parse_fsopt_token(char *c, void *private) case Opt_noquotadf: fsopt->flags |= CEPH_MOUNT_OPT_NOQUOTADF; break; + case Opt_copyfrom: + fsopt->flags &= ~CEPH_MOUNT_OPT_NOCOPYFROM; + break; + case Opt_nocopyfrom: + fsopt->flags |= CEPH_MOUNT_OPT_NOCOPYFROM; + break; #ifdef CONFIG_CEPH_FS_POSIX_ACL case Opt_acl: fsopt->sb_flags |= SB_POSIXACL; @@ -553,6 +563,9 @@ static int ceph_show_options(struct seq_file *m, struct dentry *root) seq_puts(m, ",noacl"); #endif + if (fsopt->flags & CEPH_MOUNT_OPT_NOCOPYFROM) + seq_puts(m, ",nocopyfrom"); + if (fsopt->mds_namespace) seq_show_option(m, "mds_namespace", fsopt->mds_namespace); if (fsopt->wsize != CEPH_MAX_WRITE_SIZE) diff --git a/fs/ceph/super.h b/fs/ceph/super.h index 91b13400badd..c005a5400f2e 100644 --- a/fs/ceph/super.h +++ b/fs/ceph/super.h @@ -40,6 +40,7 @@ #define CEPH_MOUNT_OPT_NOPOOLPERM (1<<11) /* no pool permission check */ #define CEPH_MOUNT_OPT_MOUNTWAIT (1<<12) /* mount waits if no mds is up */ #define CEPH_MOUNT_OPT_NOQUOTADF (1<<13) /* no root dir quota in statfs */ +#define CEPH_MOUNT_OPT_NOCOPYFROM (1<<14) /* don't use RADOS 'copy-from' op */ #define CEPH_MOUNT_OPT_DEFAULT CEPH_MOUNT_OPT_DCACHE |