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* xfs: garbage collect old cowextsz reservationsDarrick J. Wong2016-10-051-0/+1
| | | | | | | | | | | | | | | | | | Trim CoW reservations made on behalf of a cowextsz hint if they get too old or we run low on quota, so long as we don't have dirty data awaiting writeback or directio operations in progress. Garbage collection of the cowextsize extents are kept separate from prealloc extent reaping because setting the CoW prealloc lifetime to a (much) higher value than the regular prealloc extent lifetime has been useful for combatting CoW fragmentation on VM hosts where the VMs experience bursty write behaviors and we can keep the utilization ratios low enough that we don't start to run out of space. IOWs, it benefits us to keep the CoW fork reservations around for as long as we can unless we run out of blocks or hit inode reclaim. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Christoph Hellwig <hch@lst.de>
* xfs: remove __arch_packChristoph Hellwig2016-07-201-7/+0
| | | | | | | | | | | | | | | | Instead we always declare struct xfs_dir2_sf_hdr as packed. That's the expected layout, and while most major architectures do the packing by default the new structure size and offset checker showed that not only the ARM old ABI got this wrong, but various minor embedded architectures did as well. [Verified that no code change on x86-64 results from this change] Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Dave Chinner <dchinner@redhat.com> Signed-off-by: Dave Chinner <david@fromorbit.com>
* mm, fs: get rid of PAGE_CACHE_* and page_cache_{get,release} macrosKirill A. Shutemov2016-04-041-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | PAGE_CACHE_{SIZE,SHIFT,MASK,ALIGN} macros were introduced *long* time ago with promise that one day it will be possible to implement page cache with bigger chunks than PAGE_SIZE. This promise never materialized. And unlikely will. We have many places where PAGE_CACHE_SIZE assumed to be equal to PAGE_SIZE. And it's constant source of confusion on whether PAGE_CACHE_* or PAGE_* constant should be used in a particular case, especially on the border between fs and mm. Global switching to PAGE_CACHE_SIZE != PAGE_SIZE would cause to much breakage to be doable. Let's stop pretending that pages in page cache are special. They are not. The changes are pretty straight-forward: - <foo> << (PAGE_CACHE_SHIFT - PAGE_SHIFT) -> <foo>; - <foo> >> (PAGE_CACHE_SHIFT - PAGE_SHIFT) -> <foo>; - PAGE_CACHE_{SIZE,SHIFT,MASK,ALIGN} -> PAGE_{SIZE,SHIFT,MASK,ALIGN}; - page_cache_get() -> get_page(); - page_cache_release() -> put_page(); This patch contains automated changes generated with coccinelle using script below. For some reason, coccinelle doesn't patch header files. I've called spatch for them manually. The only adjustment after coccinelle is revert of changes to PAGE_CAHCE_ALIGN definition: we are going to drop it later. There are few places in the code where coccinelle didn't reach. I'll fix them manually in a separate patch. Comments and documentation also will be addressed with the separate patch. virtual patch @@ expression E; @@ - E << (PAGE_CACHE_SHIFT - PAGE_SHIFT) + E @@ expression E; @@ - E >> (PAGE_CACHE_SHIFT - PAGE_SHIFT) + E @@ @@ - PAGE_CACHE_SHIFT + PAGE_SHIFT @@ @@ - PAGE_CACHE_SIZE + PAGE_SIZE @@ @@ - PAGE_CACHE_MASK + PAGE_MASK @@ expression E; @@ - PAGE_CACHE_ALIGN(E) + PAGE_ALIGN(E) @@ expression E; @@ - page_cache_get(E) + get_page(E) @@ expression E; @@ - page_cache_release(E) + put_page(E) Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Acked-by: Michal Hocko <mhocko@suse.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* xfs: pass xfsstats structures to handlers and macrosBill O'Donnell2015-10-121-0/+7
| | | | | | | | | | | | | | | | | | | | This patch is the next step toward per-fs xfs stats. The patch makes the show and clear routines able to handle any stats structure associated with a kobject. Instead of a single global xfsstats structure, add kobject and a pointer to a per-cpu struct xfsstats. Modify the macros that manipulate the stats accordingly: XFS_STATS_INC, XFS_STATS_DEC, and XFS_STATS_ADD now access xfsstats->xs_stats. The sysfs functions need to get from the kobject back to the xfsstats structure which contains it, and pass the pointer to the ->xs_stats percpu structure into the show & clear routines. Signed-off-by: Bill O'Donnell <billodo@redhat.com> Reviewed-by: Eric Sandeen <sandeen@redhat.com> Signed-off-by: Dave Chinner <david@fromorbit.com>
* xfs: remove xfs_caddr_tChristoph Hellwig2015-06-221-1/+0
| | | | | | | | | | Just use char pointers directly instead of the confusing typedef to a pointer type. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Brian Foster <bfoster@redhat.com> Signed-off-by: Dave Chinner <david@fromorbit.com>
* xfs: remove inst_tChristoph Hellwig2015-06-221-2/+0
| | | | | | | | | | We can simply use a void pointer to pass a long return addresses in the debugging helpers. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Brian Foster <bfoster@redhat.com> Signed-off-by: Dave Chinner <david@fromorbit.com>
* xfs: remove __psint_t and __psunsigned_tChristoph Hellwig2015-06-221-11/+0
| | | | | | | | | | Replace uses of __psint_t with the proper uintptr_t and ptrdiff_t types, and remove the defintions of __psint_t and __psunsigned_t. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Brian Foster <bfoster@redhat.com> Signed-off-by: Dave Chinner <david@fromorbit.com>
* xfs: Remove icsb infrastructureDave Chinner2015-02-231-9/+0
| | | | | | | | | | | Now that the in-core superblock infrastructure has been replaced with generic per-cpu counters, we don't need it anymore. Nuke it from orbit so we are sure that it won't haunt us again... Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Brian Foster <bfoster@redhat.com> Signed-off-by: Dave Chinner <david@fromorbit.com>
* xfs: merge xfs_dinode.h into xfs_format.hChristoph Hellwig2014-11-281-0/+6
| | | | | | | | | | | More consolidatation for the on-disk format defintions. Note that the XFS_IS_REALTIME_INODE moves to xfs_linux.h instead as it is not related to the on disk format, but depends on a CONFIG_ option. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Dave Chinner <dchinner@redhat.com> Signed-off-by: Dave Chinner <david@fromorbit.com>
* xfs: kill time.hDave Chinner2014-10-021-1/+5
| | | | | | | | | | | The typedef for timespecs and nanotime() are completely unnecessary, and delay() can be moved to fs/xfs/linux.h, which means this file can go away. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Dave Chinner <david@fromorbit.com>
* Merge branch 'xfs-misc-fixes-3.17-2' into for-nextDave Chinner2014-08-041-1/+1
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| * xfs: kill xfs_vnode.hDave Chinner2014-08-041-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Move the IO flag definitions to xfs_inode.h and kill the header file as it is now empty. Removing the xfs_vnode.h file showed up an implicit header include path: xfs_linux.h -> xfs_vnode.h -> xfs_fs.h And so every xfs header file has been inplicitly been including xfs_fs.h where it is needed or not. Hence the removal of xfs_vnode.h causes all sorts of build issues because BBTOB() and friends are no longer automatically included in the build. This also gets fixed. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Dave Chinner <david@fromorbit.com>
* | Merge branch 'xfs-misc-fixes-3.17-1' into for-nextDave Chinner2014-08-041-12/+0
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| * | xfs: require 64-bit sector_tChristoph Hellwig2014-07-301-12/+0
| |/ | | | | | | | | | | | | | | | | | | | | | | | | Trying to support tiny disks only and saving a bit memory might have made sense on an SGI O2 15 years ago, but is pretty pointless today. Remove the rarely tested codepath that uses various smaller in-memory types to reduce our test matrix and make the codebase a little bit smaller and less complicated. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Ben Myers <bpm@sgi.com> Signed-off-by: Dave Chinner <david@fromorbit.com>
* | xfs: add xfs_mount sysfs kobjectBrian Foster2014-07-151-0/+11
|/ | | | | | | | | | | | | | | | | Embed a base kobject into xfs_mount. This creates a kobject associated with each XFS mount and a subdirectory in sysfs with the name of the filesystem. The subdirectory lifecycle matches that of the mount. Also add the new xfs_sysfs.[c,h] source files with some XFS sysfs infrastructure to facilitate attribute creation. Note that there are currently no attributes exported as part of the xfs_mount kobject. It exists solely to serve as a per-mount container for child objects. Signed-off-by: Brian Foster <bfoster@redhat.com> Reviewed-by: Dave Chinner <dchinner@redhat.com> Signed-off-by: Dave Chinner <david@fromorbit.com>
* xfs: return is not a functionEric Sandeen2014-06-221-1/+1
| | | | | | | | | | | | | | | return is not a function. "return(EIO);" is silly; "return (EIO);" moreso. return is not a function. Nuke the pointless parens. [dchinner: catch a couple of extra cases in xfs_attr_list.c, xfs_acl.c and xfs_linux.h.] Signed-off-by: Eric Sandeen <sandeen@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Dave Chinner <dchinner@redhat.com> Signed-off-by: Dave Chinner <david@fromorbit.com>
* xfs: add xfs_verifier_error()Eric Sandeen2014-02-271-0/+1
| | | | | | | | | | | | | | | | | | | | We want to distinguish between corruption, CRC errors, etc. In addition, the full stack trace on verifier errors seems less than helpful; it looks more like an oops than corruption. Create a new function to specifically alert the user to verifier errors, which can differentiate between EFSCORRUPTED and CRC mismatches. It doesn't dump stack unless the xfs error level is turned up high. Define a new error message (EFSBADCRC) to clearly identify CRC errors. (Defined to EBADMSG, bad message) Signed-off-by: Eric Sandeen <sandeen@redhat.com> Reviewed-by: Dave Chinner <dchinner@redhat.com> Signed-off-by: Dave Chinner <david@fromorbit.com>
* xfs: add helper for verifying checksums on xfs_bufsEric Sandeen2014-02-271-0/+1
| | | | | | | | | | | | Many/most callers of xfs_verify_cksum() pass bp->b_addr and BBTOB(bp->b_length) as the first 2 args. Add a helper which can just accept the bp and the crc offset, and work it out on its own, for brevity. Signed-off-by: Eric Sandeen <sandeen@redhat.com> Reviewed-by: Dave Chinner <dchinner@redhat.com> Signed-off-by: Dave Chinner <david@fromorbit.com>
* xfs: remove two unused macro definitions in xfs_linux.hZhi Yong Wu2013-08-201-2/+0
| | | | | | | Signed-off-by: Zhi Yong Wu <wuzhy@linux.vnet.ibm.com> Reviewed-by: Mark Tinguely <tinguely@sgi.com> Signed-off-by: Ben Myers <bpm@sgi.com>
* xfs: create wrappers for converting kuid_t to/from uid_tDwight Engen2013-08-151-0/+26
| | | | | | | | Reviewed-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Gao feng <gaofeng@cn.fujitsu.com> Signed-off-by: Dwight Engen <dwight.engen@oracle.com> Signed-off-by: Ben Myers <bpm@sgi.com>
* xfs: move kernel specific type definitions to xfs.hDave Chinner2013-08-121-0/+32
| | | | | | | | | | | | xfs_types.h is shared with userspace, so having kernel specific types defined in it is problematic. Move all the kernel specific defines to xfs_linux.h so we can remove the __KERNEL__ guards from xfs_types.h. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Mark Tinguely <tinguely@sgi.com> Signed-off-by: Ben Myers <bpm@sgi.com>
* xfs: introduce CONFIG_XFS_WARNDave Chinner2013-05-071-6/+18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Running a CONFIG_XFS_DEBUG kernel in production environments is not the best idea as it introduces significant overhead, can change the behaviour of algorithms (such as allocation) to improve test coverage, and (most importantly) panic the machine on non-fatal errors. There are many cases where all we want to do is run a kernel with more bounds checking enabled, such as is provided by the ASSERT() statements throughout the code, but without all the potential overhead and drawbacks. This patch converts all the ASSERT statements to evaluate as WARN_ON(1) statements and hence if they fail dump a warning and a stack trace to the log. This has minimal overhead and does not change any algorithms, and will allow us to find strange "out of bounds" problems more easily on production machines. There are a few places where assert statements contain debug only code. These are converted to be debug-or-warn only code so that we still get all the assert checks in the code. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Brian Foster <bfoster@redhat.com> Signed-off-by: Ben Myers <bpm@sgi.com>
* xfs: Add ratelimited printk for different alert levelsRich Johnston2013-04-031-0/+1
| | | | | | | | | | | | Ratelimited printk will be useful in printing xfs messages which are otherwise not required to be printed always due to their high rate (to prevent kernel ring buffer from overflowing), while at the same time required to be printed. Signed-off-by: Raghavendra D Prabhu <rprabhu@wnohang.net> Reviewed-by: Rich Johnston <rjohnston@sgi.com> Reviewed-by: Dave Chinner <dchinner@redhat.com> Signed-off-by: Ben Myers <bpm@sgi.com>
* xfs: add CRC infrastructureChristoph Hellwig2012-11-191-0/+1
| | | | | | | | | | | | | | | - add a mount feature bit for CRC enabled filesystems - add some helpers for generating and verifying the CRCs - add a copy_uuid helper The checksumming helpers are loosely based on similar ones in sctp, all other bits come from Dave Chinner. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Mark Tinguely <tinguely@sgi.com> Signed-off-by: Ben Myers <bpm@sgi.com>
* xfs: add background scanning to clear eofblocks inodesBrian Foster2012-11-081-0/+1
| | | | | | | | | | | | | | | | | | Create a new mount workqueue and delayed_work to enable background scanning and freeing of eofblocks inodes. The scanner kicks in once speculative preallocation occurs and stops requeueing itself when no eofblocks inodes exist. The scan interval is based on the new 'speculative_prealloc_lifetime' tunable (default to 5m). The background scanner performs unfiltered, best effort scans (which skips inodes under lock contention or with a dirty cache mapping). Signed-off-by: Brian Foster <bfoster@redhat.com> Reviewed-by: Mark Tinguely <tinguely@sgi.com> Reviewed-by: Dave Chinner <dchinner@redhat.com> Signed-off-by: Ben Myers <bpm@sgi.com>
* xfs: revert to using a kthread for AIL pushingChristoph Hellwig2011-10-111-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently we have a few issues with the way the workqueue code is used to implement AIL pushing: - it accidentally uses the same workqueue as the syncer action, and thus can be prevented from running if there are enough sync actions active in the system. - it doesn't use the HIGHPRI flag to queue at the head of the queue of work items At this point I'm not confident enough in getting all the workqueue flags and tweaks right to provide a perfectly reliable execution context for AIL pushing, which is the most important piece in XFS to make forward progress when the log fills. Revert back to use a kthread per filesystem which fixes all the above issues at the cost of having a task struct and stack around for each mounted filesystem. In addition this also gives us much better ways to diagnose any issues involving hung AIL pushing and removes a small amount of code. Signed-off-by: Christoph Hellwig <hch@lst.de> Reported-by: Stefan Priebe <s.priebe@profihost.ag> Tested-by: Stefan Priebe <s.priebe@profihost.ag> Reviewed-by: Dave Chinner <dchinner@redhat.com> Signed-off-by: Alex Elder <aelder@sgi.com>
* xfs: remove subdirectoriesChristoph Hellwig2011-08-121-0/+309
Use the move from Linux 2.6 to Linux 3.x as an excuse to kill the annoying subdirectories in the XFS source code. Besides the large amount of file rename the only changes are to the Makefile, a few files including headers with the subdirectory prefix, and the binary sysctl compat code that includes a header under fs/xfs/ from kernel/. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Alex Elder <aelder@sgi.com>
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