summaryrefslogtreecommitdiffstats
path: root/include/uapi
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@linux-foundation.org>2013-09-09 11:19:09 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2013-09-09 11:19:09 -0700
commit300893b08f3bc7057a7a5f84074090ba66c8b5ca (patch)
tree5fc5aef0b9dbab8e47e161303d57e631786c7d17 /include/uapi
parent45150c43b1b0c16e665fd0a5cdcca128b8192db1 (diff)
parent1d03c6fa88af35e55047a1f2ab116f0fdf2f55aa (diff)
downloadlinux-stable-300893b08f3bc7057a7a5f84074090ba66c8b5ca.tar.gz
linux-stable-300893b08f3bc7057a7a5f84074090ba66c8b5ca.tar.bz2
linux-stable-300893b08f3bc7057a7a5f84074090ba66c8b5ca.zip
Merge tag 'xfs-for-linus-v3.12-rc1' of git://oss.sgi.com/xfs/xfs
Pull xfs updates from Ben Myers: "For 3.12-rc1 there are a number of bugfixes in addition to work to ease usage of shared code between libxfs and the kernel, the rest of the work to enable project and group quotas to be used simultaneously, performance optimisations in the log and the CIL, directory entry file type support, fixes for log space reservations, some spelling/grammar cleanups, and the addition of user namespace support. - introduce readahead to log recovery - add directory entry file type support - fix a number of spelling errors in comments - introduce new Q_XGETQSTATV quotactl for project quotas - add USER_NS support - log space reservation rework - CIL optimisations - kernel/userspace libxfs rework" * tag 'xfs-for-linus-v3.12-rc1' of git://oss.sgi.com/xfs/xfs: (112 commits) xfs: XFS_MOUNT_QUOTA_ALL needed by userspace xfs: dtype changed xfs_dir2_sfe_put_ino to xfs_dir3_sfe_put_ino Fix wrong flag ASSERT in xfs_attr_shortform_getvalue xfs: finish removing IOP_* macros. xfs: inode log reservations are too small xfs: check correct status variable for xfs_inobt_get_rec() call xfs: inode buffers may not be valid during recovery readahead xfs: check LSN ordering for v5 superblocks during recovery xfs: btree block LSN escaping to disk uninitialised XFS: Assertion failed: first <= last && last < BBTOB(bp->b_length), file: fs/xfs/xfs_trans_buf.c, line: 568 xfs: fix bad dquot buffer size in log recovery readahead xfs: don't account buffer cancellation during log recovery readahead xfs: check for underflow in xfs_iformat_fork() xfs: xfs_dir3_sfe_put_ino can be static xfs: introduce object readahead to log recovery xfs: Simplify xfs_ail_min() with list_first_entry_or_null() xfs: Register hotcpu notifier after initialization xfs: add xfs sb v4 support for dirent filetype field xfs: Add write support for dirent filetype field xfs: Add read-only support for dirent filetype field ...
Diffstat (limited to 'include/uapi')
-rw-r--r--include/uapi/linux/dqblk_xfs.h47
1 files changed, 47 insertions, 0 deletions
diff --git a/include/uapi/linux/dqblk_xfs.h b/include/uapi/linux/dqblk_xfs.h
index 86552807aed9..dcd75cc26196 100644
--- a/include/uapi/linux/dqblk_xfs.h
+++ b/include/uapi/linux/dqblk_xfs.h
@@ -38,6 +38,7 @@
#define Q_XGETQSTAT XQM_CMD(5) /* get quota subsystem status */
#define Q_XQUOTARM XQM_CMD(6) /* free disk space used by dquots */
#define Q_XQUOTASYNC XQM_CMD(7) /* delalloc flush, updates dquots */
+#define Q_XGETQSTATV XQM_CMD(8) /* newer version of get quota */
/*
* fs_disk_quota structure:
@@ -163,4 +164,50 @@ typedef struct fs_quota_stat {
__u16 qs_iwarnlimit; /* limit for num warnings */
} fs_quota_stat_t;
+/*
+ * fs_quota_statv is used by Q_XGETQSTATV for a given file system. It provides
+ * a centralized way to get meta information about the quota subsystem. eg.
+ * space taken up for user, group, and project quotas, number of dquots
+ * currently incore.
+ *
+ * This version has proper versioning support with appropriate padding for
+ * future expansions, and ability to expand for future without creating any
+ * backward compatibility issues.
+ *
+ * Q_XGETQSTATV uses the passed in value of the requested version via
+ * fs_quota_statv.qs_version to determine the return data layout of
+ * fs_quota_statv. The kernel will fill the data fields relevant to that
+ * version.
+ *
+ * If kernel does not support user space caller specified version, EINVAL will
+ * be returned. User space caller can then reduce the version number and retry
+ * the same command.
+ */
+#define FS_QSTATV_VERSION1 1 /* fs_quota_statv.qs_version */
+/*
+ * Some basic information about 'quota files' for Q_XGETQSTATV command
+ */
+struct fs_qfilestatv {
+ __u64 qfs_ino; /* inode number */
+ __u64 qfs_nblks; /* number of BBs 512-byte-blks */
+ __u32 qfs_nextents; /* number of extents */
+ __u32 qfs_pad; /* pad for 8-byte alignment */
+};
+
+struct fs_quota_statv {
+ __s8 qs_version; /* version for future changes */
+ __u8 qs_pad1; /* pad for 16bit alignment */
+ __u16 qs_flags; /* FS_QUOTA_.* flags */
+ __u32 qs_incoredqs; /* number of dquots incore */
+ struct fs_qfilestatv qs_uquota; /* user quota information */
+ struct fs_qfilestatv qs_gquota; /* group quota information */
+ struct fs_qfilestatv qs_pquota; /* project quota information */
+ __s32 qs_btimelimit; /* limit for blks timer */
+ __s32 qs_itimelimit; /* limit for inodes timer */
+ __s32 qs_rtbtimelimit;/* limit for rt blks timer */
+ __u16 qs_bwarnlimit; /* limit for num warnings */
+ __u16 qs_iwarnlimit; /* limit for num warnings */
+ __u64 qs_pad2[8]; /* for future proofing */
+};
+
#endif /* _LINUX_DQBLK_XFS_H */