- 22 Aug, 2013 4 commits
-
-
Richard Weinberger authored
Currently the code initializizes mp->m_icsb_mutex and other things _after_ register_hotcpu_notifier(). As the notifier takes mp->m_icsb_mutex it can happen that it takes the lock before it's initialization. Signed-off-by:
Richard Weinberger <richard@nod.at> Reviewed-by:
Ben Myers <bpm@sgi.com> Signed-off-by:
-
Mark Tinguely authored
Add XFS superblock v4 support for the file type field in the directory entry feature. This support adds a feature bit for version 4 superblocks and leaves the original superblock 5 incompatibility bit. Signed-off-by:
Mark Tinguely <tinguely@sgi.com> Reviewed-by:
Geoffrey Wehrman <gwehrman@sgi.com> Signed-off-by:
-
Dave Chinner authored
Add support to propagate and add filetype values into the on-disk directs. This involves passing the filetype into the xfs_da_args structure along with the name and namelength for direct operations, and encoding it into the dirent at the same time we write the inode number into the dirent. With write support, add the feature flag to the XFS_SB_FEAT_INCOMPAT_ALL mask so we can now mount filesystems with this feature set. Performance of directory recursion is now much improved. Parallel walk of ~50 million directory entries across hundreds of directories improves significantly. Unpatched, no CRCs: Walking via ls -R real 3m19.886s user 6m36.960s sys 28m19.087s THis is doing roughly 500 getdents() calls per second, and 250,000 inode lookups per second to determine the inode type at roughly 17,000 read IOPS. CPU usage is 90% kernel space. With dtype support patched in and the fileset recreated with CRCs enabled: Walking via ls -R real 0m31.316s user 6m32.975s sys 0m21.111s This is doing roughly 3500 getdents() calls per second at 16,000 IOPS. There are no inode lookups at all. CPU usages is almost 100% userspace. This is a big win for recursive directory walks that only need to find file names and file types. Signed-off-by:
Dave Chinner <dchinner@redhat.com> Reviewed-by:
-
Dave Chinner authored
Add support for the file type field in directory entries so that readdir can return the type of the inode the dirent points to to userspace without first having to read the inode off disk. The encoding of the type field is a single byte that is added to the end of the directory entry name length. For all intents and purposes, it appends a "hidden" byte to the name field which contains the type information. As the directory entry is already of dynamic size, helpers are already required to access and decode the direct entry structures. Hence the relevent extraction and iteration helpers are updated to understand the hidden byte. Helpers for reading and writing the filetype field from the directory entries are also added. Only the read helpers are used by this patch. It also adds all the code necessary to read the type information out of the dirents on disk. Further we add the superblock feature bit and helpers to indicate that we understand the on-disk format change. This is not a compatible change - existing kernels cannot read the new format successfully - so an incompatible feature flag is added. We don't yet allow filesystems to mount with this flag yet - that will be added once write support is added. Finally, the code to take the type from the VFS, convert it to an XFS on-disk type and put it into the xfs_name structures passed around is added, but the directory code does not use this field yet. That will be in the next patch. Signed-off-by:
-
- 21 Aug, 2013 1 commit
-
-
Dwight Engen authored
Acked-by:
Jeremy Kerr <jk@ozlabs.org> Tested-by:
Dwight Engen <dwight.engen@oracle.com> Reviewed-by:
Arnd Bergmann <arnd@arndb.de> Signed-off-by:
-
- 20 Aug, 2013 26 commits
-
-
Chandra Seetharaman authored
For XFS, add support for Q_XGETQSTATV quotactl command. Signed-off-by:
Chandra Seetharaman <sekharan@us.ibm.com> Reviewed-by:
Rich Johnston <rjohnston@sgi.com> Signed-off-by:
-
Chandra Seetharaman authored
XFS now supports three types of quotas (user, group and project). Current version of Q_XGETSTAT has support for only two types of quotas. In order to support three types of quotas, the interface, specifically struct fs_quota_stat, need to be expanded. Current version of fs_quota_stat does not allow expansion without breaking backward compatibility. So, a quotactl command and new fs_quota_stat structure need to be added. This patch adds a new command Q_XGETQSTATV to quotactl() which takes a new data structure fs_quota_statv. This new data structure provides support for future expansion and backward compatibility. Callers of the new quotactl command have to set the version of the data structure being passed, and kernel will fill as much data as requested. If the kernel does not support the user-space provided version, EINVAL will be returned. User-space can reduce the version number and call the same quotactl again. Signed-off-by:
Jan Kara <jack@suse.cz> Reviewed-by:
-
Zhi Yong Wu authored
Signed-off-by:
Zhi Yong Wu <wuzhy@linux.vnet.ibm.com> Reviewed-by:
-
Zhi Yong Wu authored
Signed-off-by:
-
Zhi Yong Wu authored
Signed-off-by:
-
Zhi Yong Wu authored
Signed-off-by:
-
Zhi Yong Wu authored
Signed-off-by:
-
Zhi Yong Wu authored
Signed-off-by:
-
Zhi Yong Wu authored
Signed-off-by:
-
Zhi Yong Wu authored
Signed-off-by:
-
Zhi Yong Wu authored
Signed-off-by:
-
Zhi Yong Wu authored
Signed-off-by:
-
Zhi Yong Wu authored
Signed-off-by:
-
Zhi Yong Wu authored
Signed-off-by:
-
Zhi Yong Wu authored
Follow up with xfs naming style. Signed-off-by:
-
Zhi Yong Wu authored
Signed-off-by:
-
Zhi Yong Wu authored
Signed-off-by:
-
Zhi Yong Wu authored
Signed-off-by:
-
Zhi Yong Wu authored
Signed-off-by:
-
Zhi Yong Wu authored
Signed-off-by:
-
Zhi Yong Wu authored
Signed-off-by:
-
Zhi Yong Wu authored
Signed-off-by:
-
Zhi Yong Wu authored
Signed-off-by:
-
Zhi Yong Wu authored
Signed-off-by:
-
Zhi Yong Wu authored
Signed-off-by:
-
Zhi Yong Wu authored
Signed-off-by:
-
- 15 Aug, 2013 8 commits
-
-
Dave Chinner authored
When a transaction is cancelled and the buffer log item is clean in the transaction, the buffer log item is unconditionally freed. If the log item is in the AIL, however, this leads to a use after free condition as the item still has other users. In this case, xfs_buf_item_relse() should only be called on clean buffer items if the reference count has dropped to zero. This ensures only the last user frees the item. Signed-off-by:
-
Dwight Engen authored
Reviewed-by:
Gao feng <gaofeng@cn.fujitsu.com> Signed-off-by:
-
Dwight Engen authored
Check for CAP_SYS_ADMIN since the caller can truncate preallocated blocks from files they do not own nor have write access to. A more fine grained access check was considered: require the caller to specify their own uid/gid and to use inode_permission to check for write, but this would not catch the case of an inode not reachable via path traversal from the callers mount namespace. Add check for read-only filesystem to free eofblocks ioctl. Reviewed-by:
Brian Foster <bfoster@redhat.com> Reviewed-by:
-
Dwight Engen authored
Have eofblocks ioctl convert uid_t to kuid_t into internal structure. Update internal filter matching to compare ids with kuid_t types. Reviewed-by:
-
Dwight Engen authored
Use uint32 from init_user_ns for xfs internal uid/gid representation in xfs_icdinode, xfs_dqid_t. Reviewed-by:
-
Dwight Engen authored
Use inode_capable() to check if SUID|SGID bits should be cleared to match similar check in inode_change_ok(). The check for CAP_LINUX_IMMUTABLE was not modified since all other file systems also check against init_user_ns rather than current_user_ns. Only allow changing of projid from init_user_ns. Reviewed-by:
-
Dwight Engen authored
Change permission check for setting ACL to use inode_owner_or_capable() which will additionally allow a CAP_FOWNER user in a user namespace to be able to set an ACL on an inode covered by the user namespace mapping. Reviewed-by:
-
Dwight Engen authored
Reviewed-by:
-
- 13 Aug, 2013 1 commit
-
-
Dave Chinner authored
The xc_cil_lock is used for two purposes - to protect the CIL itself, and to protect the push/commit state and lists. These are two logically separate structures and operations, so can have their own locks. This means that pushing on the CIL and the commit wait ordering won't contend for a lock with other transactions that are completing concurrently. As the CIL insertion is the hottest path throught eh CIL, this is a big win. Signed-off-by:
-
