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linux/fs/xfs
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Christoph Hellwig 474fce0675 xfs: replace i_flock with a sleeping bitlock 
We almost never block on i_flock, the exception is synchronous inode
flushing.  Instead of bloating the inode with a 16/24-byte completion
that we abuse as a semaphore just implement it as a bitlock that uses
a bit waitqueue for the rare sleeping path.  This primarily is a
tradeoff between a much smaller inode and a faster non-blocking
path vs faster wakeups, and we are much better off with the former.

A small downside is that we will lose lockdep checking for i_flock, but
given that it's always taken inside the ilock that should be acceptable.

Note that for example the inode writeback locking is implemented in a
very similar way.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Alex Elder <aelder@sgi.com>
Signed-off-by: Ben Myers <bpm@sgi.com>
2012-01-17 15:06:45 -06:00
..
Kconfig
quota: Make QUOTACTL config be selected by its users
2010-10-05 12:16:37 +02:00
kmem.c
xfs: remove subdirectories
2011-08-12 16:21:35 -05:00
kmem.h
Merge branch 'master' into for-next
2011-09-15 15:08:18 +02:00
Makefile
xfs: fix tracing builds inside the source tree
2011-08-22 16:37:24 -05:00
mrlock.h
xfs: remove subdirectories
2011-08-12 16:21:35 -05:00
time.h
xfs: remove subdirectories
2011-08-12 16:21:35 -05:00
uuid.c
xfs: remove subdirectories
2011-08-12 16:21:35 -05:00
uuid.h
xfs: remove subdirectories
2011-08-12 16:21:35 -05:00
xfs_acl.c
xfs: fix acl count validation in xfs_acl_from_disk()
2011-12-16 15:17:42 -06:00
xfs_acl.h
xfs: Fix build breakage in xfs_iops.c when CONFIG_FS_POSIX_ACL is not set
2011-08-01 02:35:04 -04:00
xfs_ag.h
xfs: Remove the macro XFS_BUF_PTR
2011-07-25 15:03:13 -05:00
xfs_alloc_btree.c
xfs: remove leftovers of the old btree tracing code
2011-07-13 13:43:50 +02:00
xfs_alloc_btree.h
[XFS] Always use struct xfs_btree_block instead of short / longform
2008-10-30 17:14:34 +11:00
xfs_alloc.c
xfs: remove XFS_BUF_SET_VTYPE and XFS_BUF_SET_VTYPE_REF
2011-10-11 21:15:09 -05:00
xfs_alloc.h
xfs: do not discard alloc btree blocks
2011-05-24 11:17:22 -05:00
xfs_aops.c
xfs: fix force shutdown handling in xfs_end_io
2011-11-08 10:48:23 -06:00
xfs_aops.h
xfs: remove i_iocount
2011-10-11 21:15:01 -05:00
xfs_attr_leaf.c
xfs: remove the if_ext_max field in struct xfs_ifork
2012-01-17 15:02:28 -06:00
xfs_attr_leaf.h
[XFS] Remove macro-to-function indirections in attr code
2009-01-09 15:46:44 +11:00
xfs_attr_sf.h
xfs: convert attr to use unsigned names
2010-01-20 10:47:48 +11:00
xfs_attr.c
xfs: remove xfs_itruncate_data
2012-01-13 12:11:45 -06:00
xfs_attr.h
xfs: convert attr to use unsigned names
2010-01-20 10:47:48 +11:00
xfs_bit.c
…
xfs_bit.h
[XFS] Remove macro-to-function indirections in the mask code
2009-01-09 15:53:54 +11:00
xfs_bmap_btree.c
xfs: remove leftovers of the old btree tracing code
2011-07-13 13:43:50 +02:00
xfs_bmap_btree.h
xfs: make several more functions static
2010-01-15 15:31:38 -06:00
xfs_bmap.c
xfs: remove the if_ext_max field in struct xfs_ifork
2012-01-17 15:02:28 -06:00
xfs_bmap.h
xfs: cleanup xfs_bmap.h
2011-10-11 21:15:07 -05:00
xfs_btree.c
xfs: remove XFS_BUF_SET_VTYPE and XFS_BUF_SET_VTYPE_REF
2011-10-11 21:15:09 -05:00
xfs_btree.h
xfs: Remove the macro XFS_BUF_PTR
2011-07-25 15:03:13 -05:00
xfs_buf_item.c
xfs: constify xfs_item_ops
2011-11-08 10:48:23 -06:00
xfs_buf_item.h
xfs: use struct list_head for the buf cancel table
2010-12-16 16:05:22 -06:00
xfs_buf.c
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial
2012-01-08 13:21:22 -08:00
xfs_buf.h
xfs: remove unused XBT_FORCE_SLEEP bit
2011-12-16 15:12:33 -06:00
xfs_da_btree.c
xfs: remove XFS_BUF_SET_VTYPE and XFS_BUF_SET_VTYPE_REF
2011-10-11 21:15:09 -05:00
xfs_da_btree.h
xfs: remove the dead XFS_DABUF_DEBUG code
2011-07-13 13:43:50 +02:00
xfs_dfrag.c
xfs: remove the if_ext_max field in struct xfs_ifork
2012-01-17 15:02:28 -06:00
xfs_dfrag.h
xfs: clean up inconsistent variable naming in xfs_swap_extent
2010-01-15 15:31:23 -06:00
xfs_dinode.h
xfs: Remove the macro XFS_BUF_PTR
2011-07-25 15:03:13 -05:00
xfs_dir2_block.c
xfs: reshuffle dir2 headers
2011-07-13 13:43:48 +02:00
xfs_dir2_data.c
xfs: reshuffle dir2 headers
2011-07-13 13:43:48 +02:00
xfs_dir2_format.h
xfs: cleanup struct xfs_dir2_free
2011-07-13 13:43:48 +02:00
xfs_dir2_leaf.c
xfs: introduce xfs_bmapi_read()
2011-10-11 21:15:03 -05:00
xfs_dir2_node.c
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial
2011-07-25 13:56:39 -07:00
xfs_dir2_priv.h
xfs: reshuffle dir2 headers
2011-07-13 13:43:48 +02:00
xfs_dir2_sf.c
xfs: reshuffle dir2 headers
2011-07-13 13:43:48 +02:00
xfs_dir2.c
xfs: get rid of open-coded S_ISREG(), etc.
2011-07-26 15:05:16 -04:00
xfs_dir2.h
xfs: reshuffle dir2 headers
2011-07-13 13:43:48 +02:00
xfs_discard.c
xfs: fix endian conversion issue in discard code
2012-01-03 11:39:55 -06:00
xfs_discard.h
xfs: remove subdirectories
2011-08-12 16:21:35 -05:00
xfs_dquot_item.c
xfs: cleanup dquot locking helpers
2011-12-12 17:28:20 -06:00
xfs_dquot_item.h
xfs: remove subdirectories
2011-08-12 16:21:35 -05:00
xfs_dquot.c
xfs: remove XFS_QMOPT_DQSUSER
2011-12-15 14:38:30 -06:00
xfs_dquot.h
xfs: remove XFS_QMOPT_DQSUSER
2011-12-15 14:38:30 -06:00
xfs_error.c
xfs: Convert remaining cmn_err() callers to new API
2011-03-07 10:08:35 +11:00
xfs_error.h
xfs: kill support/debug.[ch]
2011-03-07 10:09:35 +11:00
xfs_export.c
xfs: fix nfs export of 64-bit inodes numbers on 32-bit kernels
2011-12-06 10:46:23 -06:00
xfs_export.h
xfs: remove subdirectories
2011-08-12 16:21:35 -05:00
xfs_extfree_item.c
xfs: constify xfs_item_ops
2011-11-08 10:48:23 -06:00
xfs_extfree_item.h
xfs: Pull EFI/EFD handling out from under the AIL lock
2010-12-20 11:59:49 +11:00
xfs_file.c
treewide: Fix typos in various parts of the kernel, and fix some comments.
2011-12-02 14:57:31 +01:00
xfs_filestream.c
xfs: rename allocation range fields in struct xfs_bmalloca
2011-10-11 21:15:06 -05:00
xfs_filestream.h
xfs: clean up filestreams helpers
2010-07-26 13:16:51 -05:00
xfs_fs_subr.c
xfs: remove subdirectories
2011-08-12 16:21:35 -05:00
xfs_fs.h
xfs: consolidate & clarify mount sanity checks
2011-07-08 11:32:51 -05:00
xfs_fsops.c
xfs: Check the return value of xfs_buf_get()
2011-10-11 21:15:01 -05:00
xfs_fsops.h
xfs: ensure log covering transactions are synchronous
2011-01-11 20:28:17 -06:00
xfs_globals.c
xfs: remove subdirectories
2011-08-12 16:21:35 -05:00
xfs_ialloc_btree.c
xfs: remove leftovers of the old btree tracing code
2011-07-13 13:43:50 +02:00
xfs_ialloc_btree.h
xfs: remove superflous inobt macros
2009-02-09 08:37:14 +01:00
xfs_ialloc.c
xfs: propagate umode_t
2012-01-03 22:55:00 -05:00
xfs_ialloc.h
xfs: propagate umode_t
2012-01-03 22:55:00 -05:00
xfs_iget.c
xfs: replace i_flock with a sleeping bitlock
2012-01-17 15:06:45 -06:00
xfs_inode_item.c
xfs: replace i_flock with a sleeping bitlock
2012-01-17 15:06:45 -06:00
xfs_inode_item.h
xfs: simplify inode to transaction joining
2010-07-26 13:16:36 -05:00
xfs_inode.c
xfs: replace i_flock with a sleeping bitlock
2012-01-17 15:06:45 -06:00
xfs_inode.h
xfs: replace i_flock with a sleeping bitlock
2012-01-17 15:06:45 -06:00
xfs_inum.h
xfs: cleanup shortform directory inode number handling
2011-07-08 14:35:03 +02:00
xfs_ioctl32.c
vfs: mnt_drop_write_file()
2012-01-03 22:52:40 -05:00
xfs_ioctl32.h
xfs: remove subdirectories
2011-08-12 16:21:35 -05:00
xfs_ioctl.c
vfs: mnt_drop_write_file()
2012-01-03 22:52:40 -05:00
xfs_ioctl.h
xfs: remove subdirectories
2011-08-12 16:21:35 -05:00
xfs_iomap.c
xfs: cleanup xfs_iomap_eof_align_last_fsb
2012-01-13 12:11:46 -06:00
xfs_iomap.h
xfs: kill xfs_iomap
2010-12-16 16:05:51 -06:00
xfs_iops.c
xfs: remove xfs_itruncate_data
2012-01-13 12:11:45 -06:00
xfs_iops.h
xfs: remove subdirectories
2011-08-12 16:21:35 -05:00
xfs_itable.c
xfs: fix variable set but not used warnings
2011-04-08 08:09:12 -05:00
xfs_itable.h
xfs: remove block number from inode lookup code
2010-06-24 11:35:17 +10:00
xfs_linux.h
xfs: revert to using a kthread for AIL pushing
2011-10-11 11:02:49 -05:00
xfs_log_cil.c
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial
2012-01-08 13:21:22 -08:00
xfs_log_priv.h
xfs: exact busy extent tracking
2011-04-28 13:18:04 -05:00
xfs_log_recover.c
xfs: remove XFS_bflush
2011-10-11 21:15:11 -05:00
xfs_log_recover.h
xfs: Clean up XFS_BLI_* flag namespace
2010-05-24 10:33:39 -05:00
xfs_log.c
xfs: remove the deprecated nodelaylog option
2011-12-08 12:30:32 -06:00
xfs_log.h
xfs: cleanup the transaction commit path a bit
2011-12-08 13:53:30 -06:00
xfs_message.c
xfs: remove subdirectories
2011-08-12 16:21:35 -05:00
xfs_message.h
treewide: use __printf not __attribute__((format(printf,...)))
2011-10-31 17:30:54 -07:00
xfs_mount.c
xfs: remove XFS_bflush
2011-10-11 21:15:11 -05:00
xfs_mount.h
xfs: remove the deprecated nodelaylog option
2011-12-08 12:30:32 -06:00
xfs_mru_cache.c
xfs: convert to alloc_workqueue()
2011-02-01 11:42:43 +01:00
xfs_mru_cache.h
xfs: Kill filestreams cache flush
2010-01-15 15:34:22 -06:00
xfs_qm_bhv.c
xfs: remove subdirectories
2011-08-12 16:21:35 -05:00
xfs_qm_stats.c
xfs: remove subdirectories
2011-08-12 16:21:35 -05:00
xfs_qm_stats.h
xfs: remove subdirectories
2011-08-12 16:21:35 -05:00
xfs_qm_syscalls.c
xfs: remove xfs_itruncate_data
2012-01-13 12:11:45 -06:00
xfs_qm.c
xfs: simplify xfs_qm_detach_gdquots
2011-12-16 15:33:30 -06:00
xfs_qm.h
xfs: remove xfs_qm_sync
2011-12-12 16:41:44 -06:00
xfs_quota_priv.h
xfs: remove subdirectories
2011-08-12 16:21:35 -05:00
xfs_quota.h
xfs: remove XFS_QMOPT_DQSUSER
2011-12-15 14:38:30 -06:00
xfs_quotaops.c
xfs: remove subdirectories
2011-08-12 16:21:35 -05:00
xfs_rename.c
xfs: simplify xfs_trans_ijoin* again
2011-10-11 21:15:08 -05:00
xfs_rtalloc.c
xfs: simplify xfs_trans_ijoin* again
2011-10-11 21:15:08 -05:00
xfs_rtalloc.h
xfs: Remove the macro XFS_BUF_PTR
2011-07-25 15:03:13 -05:00
xfs_rw.c
xfs: clean up xfs_ioerror_alert
2011-10-11 21:15:10 -05:00
xfs_rw.h
xfs: clean up xfs_ioerror_alert
2011-10-11 21:15:10 -05:00
xfs_sb.h
xfs: Remove the macro XFS_BUF_PTR
2011-07-25 15:03:13 -05:00
xfs_stats.c
xfs: remove subdirectories
2011-08-12 16:21:35 -05:00
xfs_stats.h
xfs: remove subdirectories
2011-08-12 16:21:35 -05:00
xfs_super.c
xfs: replace i_flock with a sleeping bitlock
2012-01-17 15:06:45 -06:00
xfs_super.h
xfs: remove subdirectories
2011-08-12 16:21:35 -05:00
xfs_sync.c
xfs: replace i_flock with a sleeping bitlock
2012-01-17 15:06:45 -06:00
xfs_sync.h
xfs: log all dirty inodes in xfs_fs_sync_fs
2011-12-23 16:41:47 -06:00
xfs_sysctl.c
xfs: remove subdirectories
2011-08-12 16:21:35 -05:00
xfs_sysctl.h
xfs: remove subdirectories
2011-08-12 16:21:35 -05:00
xfs_trace.c
xfs: remove subdirectories
2011-08-12 16:21:35 -05:00
xfs_trace.h
xfs: remove the if_ext_max field in struct xfs_ifork
2012-01-17 15:02:28 -06:00
xfs_trans_ail.c
xfs: add AIL pushing tracepoints
2011-10-18 15:12:04 -05:00
xfs_trans_buf.c
xfs: clean up xfs_ioerror_alert
2011-10-11 21:15:10 -05:00
xfs_trans_dquot.c
xfs: remove subdirectories
2011-08-12 16:21:35 -05:00
xfs_trans_extfree.c
xfs: Pull EFI/EFD handling out from under the AIL lock
2010-12-20 11:59:49 +11:00
xfs_trans_inode.c
xfs: simplify xfs_trans_ijoin* again
2011-10-11 21:15:08 -05:00
xfs_trans_priv.h
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux
2011-10-17 15:42:02 -05:00
xfs_trans_space.h
xfs: remove superflous inobt macros
2009-02-09 08:37:14 +01:00
xfs_trans.c
xfs: remove the lid_size field in struct log_item_desc
2011-12-08 13:53:30 -06:00
xfs_trans.h
xfs: remove the lid_size field in struct log_item_desc
2011-12-08 13:53:30 -06:00
xfs_types.h
xfs: exact busy extent tracking
2011-04-28 13:18:04 -05:00
xfs_utils.c
xfs: propagate umode_t
2012-01-03 22:55:00 -05:00
xfs_utils.h
xfs: propagate umode_t
2012-01-03 22:55:00 -05:00
xfs_vnode.h
xfs: remove subdirectories
2011-08-12 16:21:35 -05:00
xfs_vnodeops.c
xfs: remove xfs_itruncate_data
2012-01-13 12:11:45 -06:00
xfs_vnodeops.h
xfs: propagate umode_t
2012-01-03 22:55:00 -05:00
xfs_xattr.c
xfs: remove subdirectories
2011-08-12 16:21:35 -05:00
xfs.h
xfs: don't expect xfs headers to be in subdirectories
2011-08-12 13:57:55 -05:00