Linus Torvalds [Tue, 6 Jan 2009 02:58:06 +0000 (18:58 -0800)]
Merge branch 'i2c-next' of git://aeryn.fluff.org.uk/bjdooks/linux
* 'i2c-next' of git://aeryn.fluff.org.uk/bjdooks/linux:
i2c-omap: fix type of irq handler function
i2c-s3c2410: Change IRQ to be plain integer.
i2c-s3c2410: Allow more than one i2c-s3c2410 adapter
i2c-s3c2410: Remove default platform data.
i2c-s3c2410: Use platform data for gpio configuration
i2c-s3c2410: Fixup style problems from checkpatch.pl
i2c-omap: Enable I2C wakeups for 34xx
i2c-omap: reprogram OCP_SYSCONFIG register after reset
i2c-omap: convert 'rev1' flag to generic 'rev' u8
i2c-omap: fix I2C timeouts due to recursive omap_i2c_{un,}idle()
i2c-omap: Clean-up i2c-omap
i2c-omap: Don't compile in OMAP15xx I2C ISR for non-OMAP15xx builds
i2c-omap: Mark init-only functions as __init
i2c-omap: Add support for omap34xx
i2c-omap: FIFO handling support and broken hw workaround for i2c-omap
i2c-omap: Add high-speed support to omap-i2c
i2c-omap: Close suspected race between omap_i2c_idle() and omap_i2c_isr()
i2c-omap: Do not use interruptible wait call in omap_i2c_xfer_msg
Fix up apparently-trivial conflict in drivers/i2c/busses/i2c-s3c2410.c
* git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-2.6-nmw: (27 commits)
GFS2: Use DEFINE_SPINLOCK
GFS2: Fix use-after-free bug on umount (try #2)
Revert "GFS2: Fix use-after-free bug on umount"
GFS2: Streamline alloc calculations for writes
GFS2: Send useful information with uevent messages
GFS2: Fix use-after-free bug on umount
GFS2: Remove ancient, unused code
GFS2: Move four functions from super.c
GFS2: Fix bug in gfs2_lock_fs_check_clean()
GFS2: Send some sensible sysfs stuff
GFS2: Kill two daemons with one patch
GFS2: Move gfs2_recoverd into recovery.c
GFS2: Fix "truncate in progress" hang
GFS2: Clean up & move gfs2_quotad
GFS2: Add more detail to debugfs glock dumps
GFS2: Banish struct gfs2_rgrpd_host
GFS2: Move rg_free from gfs2_rgrpd_host to gfs2_rgrpd
GFS2: Move rg_igeneration into struct gfs2_rgrpd
GFS2: Banish struct gfs2_dinode_host
GFS2: Move i_size from gfs2_dinode_host and rename it to i_disksize
...
Linus Torvalds [Tue, 6 Jan 2009 02:47:12 +0000 (18:47 -0800)]
igb: fix anoying type mismatch warning on rx/tx queue sizing
When using "min()", the types of both sides should match. With the cpu
mask changes, the type of num_online_cpus() will now depend on config
options. Use "min_t()" with an explicit type instead.
And make the rx/tx case look the same too, just for sanity.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (44 commits)
qlge: Fix sparse warnings for tx ring indexes.
qlge: Fix sparse warning regarding rx buffer queues.
qlge: Fix sparse endian warning in ql_hw_csum_setup().
qlge: Fix sparse endian warning for inbound packet control block flags.
qlge: Fix sparse warnings for byte swapping in qlge_ethool.c
myri10ge: print MAC and serial number on probe failure
pkt_sched: cls_u32: Fix locking in u32_change()
iucv: fix cpu hotplug
af_iucv: Free iucv path/socket in path_pending callback
af_iucv: avoid left over IUCV connections from failing connects
af_iucv: New error return codes for connect()
net/ehea: bitops work on unsigned longs
Revert "net: Fix for initial link state in 2.6.28"
tcp: Kill extraneous SPLICE_F_NONBLOCK checks.
tcp: don't mask EOF and socket errors on nonblocking splice receive
dccp: Integrate the TFRC library with DCCP
dccp: Clean up ccid.c after integration of CCID plugins
dccp: Lockless integration of CCID congestion-control plugins
qeth: get rid of extra argument after printk to dev_* conversion
qeth: No large send using EDDP for HiperSockets.
...
Linus Torvalds [Tue, 6 Jan 2009 02:34:12 +0000 (18:34 -0800)]
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6:
ALSA: ice1724 - Fix a typo in IEC958 PCM name
ASoC: fix davinci-sffsdr buglet
ALSA: sound/usb: Use negated usb_endpoint_xfer_control, etc
ALSA: hda - cxt5051 report jack state
ALSA: hda - add basic jack reporting functions to patch_conexant.c
ALSA: Use usb_set/get_intfdata
ASoC: Clean up kerneldoc warnings
ASoC: Fix pxa2xx-pcm checks for invalid DMA channels
LSA: hda - Add HP Acacia detection
ALSA: hda - fix name for ALC1200
ALSA: sound/usb: use USB API functions rather than constants
ASoC: TWL4030: DAPM based capture implementation
ASoC: TWL4030: Make the enum filter generic for twl4030
Linus Torvalds [Tue, 6 Jan 2009 02:33:38 +0000 (18:33 -0800)]
Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/davej/cpufreq
* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/davej/cpufreq:
[CPUFREQ] Fix on resume, now preserves user policy min/max.
[CPUFREQ] Add Celeron Core support to p4-clockmod.
[CPUFREQ] add to speedstep-lib additional fsb values for core processors
[CPUFREQ] Disable sysfs ui for p4-clockmod.
[CPUFREQ] p4-clockmod: reduce noise
[CPUFREQ] clean up speedstep-centrino and reduce cpumask_t usage
Linus Torvalds [Tue, 6 Jan 2009 02:32:43 +0000 (18:32 -0800)]
Merge branch 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mfasheh/ocfs2
* 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mfasheh/ocfs2: (138 commits)
ocfs2: Access the right buffer_head in ocfs2_merge_rec_left.
ocfs2: use min_t in ocfs2_quota_read()
ocfs2: remove unneeded lvb casts
ocfs2: Add xattr support checking in init_security
ocfs2: alloc xattr bucket in ocfs2_xattr_set_handle
ocfs2: calculate and reserve credits for xattr value in mknod
ocfs2/xattr: fix credits calculation during index create
ocfs2/xattr: Always updating ctime during xattr set.
ocfs2/xattr: Remove extend_trans call and add its credits from the beginning
ocfs2/dlm: Fix race during lockres mastery
ocfs2/dlm: Fix race in adding/removing lockres' to/from the tracking list
ocfs2/dlm: Hold off sending lockres drop ref message while lockres is migrating
ocfs2/dlm: Clean up errors in dlm_proxy_ast_handler()
ocfs2/dlm: Fix a race between migrate request and exit domain
ocfs2: One more hamming code optimization.
ocfs2: Another hamming code optimization.
ocfs2: Don't hand-code xor in ocfs2_hamming_encode().
ocfs2: Enable metadata checksums.
ocfs2: Validate superblock with checksum and ecc.
ocfs2: Checksum and ECC for directory blocks.
...
Linus Torvalds [Tue, 6 Jan 2009 02:32:06 +0000 (18:32 -0800)]
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6:
inotify: fix type errors in interfaces
fix breakage in reiserfs_new_inode()
fix the treatment of jfs special inodes
vfs: remove duplicate code in get_fs_type()
add a vfs_fsync helper
sys_execve and sys_uselib do not call into fsnotify
zero i_uid/i_gid on inode allocation
inode->i_op is never NULL
ntfs: don't NULL i_op
isofs check for NULL ->i_op in root directory is dead code
affs: do not zero ->i_op
kill suid bit only for regular files
vfs: lseek(fd, 0, SEEK_CUR) race condition
Nick Piggin [Tue, 6 Jan 2009 02:05:50 +0000 (03:05 +0100)]
mm lockless pagecache barrier fix
An XFS workload showed up a bug in the lockless pagecache patch. Basically it
would go into an "infinite" loop, although it would sometimes be able to break
out of the loop! The reason is a missing compiler barrier in the "increment
reference count unless it was zero" case of the lockless pagecache protocol in
the gang lookup functions.
This would cause the compiler to use a cached value of struct page pointer to
retry the operation with, rather than reload it. So the page might have been
removed from pagecache and freed (refcount==0) but the lookup would not correctly
notice the page is no longer in pagecache, and keep attempting to increment the
refcount and failing, until the page gets reallocated for something else. This
isn't a data corruption because the condition will be detected if the page has
been reallocated. However it can result in a lockup.
Linus points out that ACCESS_ONCE is also required in that pointer load, even
if it's absence is not causing a bug on our particular build. The most general
way to solve this is just to put an rcu_dereference in radix_tree_deref_slot.
Assembly of find_get_pages,
before:
.L220:
movq (%rbx), %rax #* ivtmp.1162, tmp82
movq (%rax), %rdi #, prephitmp.1149
.L218:
testb $1, %dil #, prephitmp.1149
jne .L217 #,
testq %rdi, %rdi # prephitmp.1149
je .L203 #,
cmpq $-1, %rdi #, prephitmp.1149
je .L217 #,
movl 8(%rdi), %esi # <variable>._count.counter, c
testl %esi, %esi # c
je .L218 #,
after:
.L212:
movq (%rbx), %rax #* ivtmp.1109, tmp81
movq (%rax), %rdi #, ret
testb $1, %dil #, ret
jne .L211 #,
testq %rdi, %rdi # ret
je .L197 #,
cmpq $-1, %rdi #, ret
je .L211 #,
movl 8(%rdi), %esi # <variable>._count.counter, c
testl %esi, %esi # c
je .L212 #,
(notice the obvious infinite loop in the first example, if page->count remains 0)
Signed-off-by: Nick Piggin <npiggin@suse.de> Reviewed-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Ron Mercer [Tue, 6 Jan 2009 02:19:59 +0000 (18:19 -0800)]
qlge: Fix sparse warnings for tx ring indexes.
Warnings:
drivers/net/qlge/qlge_main.c:1474:34: warning: restricted degrades to integer
drivers/net/qlge/qlge_main.c:1475:36: warning: restricted degrades to integer
drivers/net/qlge/qlge_main.c:1592:51: warning: restricted degrades to integer
drivers/net/qlge/qlge_main.c:1941:20: warning: incorrect type in assignment (different base types)
drivers/net/qlge/qlge_main.c:1941:20: expected restricted unsigned int [usertype] tid
drivers/net/qlge/qlge_main.c:1941:20: got int [signed] index
drivers/net/qlge/qlge_main.c:1945:24: warning: incorrect type in assignment (different base types)
drivers/net/qlge/qlge_main.c:1945:24: expected restricted unsigned int [usertype] txq_idx
drivers/net/qlge/qlge_main.c:1945:24: got unsigned int [unsigned] [usertype] tx_ring_idx
Signed-off-by: Ron Mercer <ron.mercer@qlogic.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Warnings:
drivers/net/qlge/qlge_main.c:909:17: warning: incorrect type in assignment (different base types)
drivers/net/qlge/qlge_main.c:909:17: expected unsigned int [unsigned] [usertype] addr_lo
drivers/net/qlge/qlge_main.c:909:17: got restricted unsigned int [usertype] <noident>
drivers/net/qlge/qlge_main.c:911:17: warning: incorrect type in assignment (different base types)
drivers/net/qlge/qlge_main.c:911:17: expected unsigned int [unsigned] [usertype] addr_hi
drivers/net/qlge/qlge_main.c:911:17: got restricted unsigned int [usertype] <noident>
drivers/net/qlge/qlge_main.c:974:17: warning: incorrect type in assignment (different base types)
drivers/net/qlge/qlge_main.c:974:17: expected unsigned int [unsigned] [usertype] addr_lo
drivers/net/qlge/qlge_main.c:974:17: got restricted unsigned int [usertype] <noident>
drivers/net/qlge/qlge_main.c:975:17: warning: incorrect type in assignment (different base types)
drivers/net/qlge/qlge_main.c:975:17: expected unsigned int [unsigned] [usertype] addr_hi
drivers/net/qlge/qlge_main.c:975:17: got restricted unsigned int [usertype] <noident>
drivers/net/qlge/qlge_main.c:2132:16: warning: incorrect type in assignment (different base types)
drivers/net/qlge/qlge_main.c:2132:16: expected unsigned int [unsigned] [usertype] addr_lo
drivers/net/qlge/qlge_main.c:2132:16: got restricted unsigned int [usertype] <noident>
drivers/net/qlge/qlge_main.c:2133:16: warning: incorrect type in assignment (different base types)
drivers/net/qlge/qlge_main.c:2133:16: expected unsigned int [unsigned] [usertype] addr_hi
drivers/net/qlge/qlge_main.c:2133:16: got restricted unsigned int [usertype] <noident>
drivers/net/qlge/qlge_main.c:2212:15: warning: incorrect type in assignment (different base types)
drivers/net/qlge/qlge_main.c:2212:15: expected unsigned int [unsigned] [usertype] addr_lo
drivers/net/qlge/qlge_main.c:2212:15: got restricted unsigned int [usertype] <noident>
drivers/net/qlge/qlge_main.c:2214:15: warning: incorrect type in assignment (different base types)
drivers/net/qlge/qlge_main.c:2214:15: expected unsigned int [unsigned] [usertype] addr_hi
drivers/net/qlge/qlge_main.c:2214:15: got restricted unsigned int [usertype] <noident>
Signed-off-by: Ron Mercer <ron.mercer@qlogic.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Ron Mercer [Tue, 6 Jan 2009 02:18:45 +0000 (18:18 -0800)]
qlge: Fix sparse endian warning in ql_hw_csum_setup().
Changed u16 to __sum16 usage.
Warnings:
drivers/net/qlge/qlge_main.c:1897:9: warning: incorrect type in assignment (different base types)
drivers/net/qlge/qlge_main.c:1897:9: expected unsigned short [usertype] *check
drivers/net/qlge/qlge_main.c:1897:9: got restricted unsigned short *<noident>
drivers/net/qlge/qlge_main.c:1903:9: warning: incorrect type in assignment (different base types)
drivers/net/qlge/qlge_main.c:1903:9: expected unsigned short [usertype] *check
drivers/net/qlge/qlge_main.c:1903:9: got restricted unsigned short *<noident>
drivers/net/qlge/qlge_main.c:1909:9: warning: incorrect type in assignment (different base types)
drivers/net/qlge/qlge_main.c:1909:9: expected unsigned short [unsigned] [short] [usertype] <noident>
Signed-off-by: Ron Mercer <ron.mercer@qlogic.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Ron Mercer [Tue, 6 Jan 2009 02:18:22 +0000 (18:18 -0800)]
qlge: Fix sparse endian warning for inbound packet control block flags.
Changed flags element from __le32 to 3 reserved bytes and one byte of
flags. Changed flags bit definitions to reflect byte width instead of
__le32 width.
Warnings:
drivers/net/qlge/qlge_main.c:1206:16: warning: restricted degrades to integer
drivers/net/qlge/qlge_main.c:1207:16: warning: restricted degrades to integer
drivers/net/qlge/qlge_main.c:1233:17: warning: restricted degrades to integer
drivers/net/qlge/qlge_main.c:1276:17: warning: restricted degrades to integer
drivers/net/qlge/qlge_main.c:1349:19: warning: restricted degrades to integer
Signed-off-by: Ron Mercer <ron.mercer@qlogic.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Ron Mercer [Tue, 6 Jan 2009 02:17:33 +0000 (18:17 -0800)]
qlge: Fix sparse warnings for byte swapping in qlge_ethool.c
drivers/net/qlge/qlge_ethtool.c:59:23: warning: cast to restricted type
drivers/net/qlge/qlge_ethtool.c:59:21: warning: incorrect type in assignment (different base types)
drivers/net/qlge/qlge_ethtool.c:59:21: expected restricted unsigned short [usertype] irq_delay
drivers/net/qlge/qlge_ethtool.c:59:21: got unsigned short [unsigned] [usertype] <noident>
drivers/net/qlge/qlge_ethtool.c:61:8: warning: cast to restricted type
drivers/net/qlge/qlge_ethtool.c:60:21: warning: incorrect type in assignment (different base types)
drivers/net/qlge/qlge_ethtool.c:60:21: expected restricted unsigned short [usertype] pkt_delay
drivers/net/qlge/qlge_ethtool.c:60:21: got unsigned short [unsigned] [usertype] <noident>
drivers/net/qlge/qlge_ethtool.c:82:23: warning: cast to restricted type
drivers/net/qlge/qlge_ethtool.c:82:21: warning: incorrect type in assignment (different base types)
drivers/net/qlge/qlge_ethtool.c:82:21: expected restricted unsigned short [usertype] irq_delay
drivers/net/qlge/qlge_ethtool.c:82:21: got unsigned short [unsigned] [usertype] <noident>
drivers/net/qlge/qlge_ethtool.c:84:8: warning: cast to restricted type
drivers/net/qlge/qlge_ethtool.c:83:21: warning: incorrect type in assignment (different base types)
drivers/net/qlge/qlge_ethtool.c:83:21: expected restricted unsigned short [usertype] pkt_delay
drivers/net/qlge/qlge_ethtool.c:83:21: got unsigned short [unsigned] [usertype] <noident>
Signed-off-by: Ron Mercer <ron.mercer@qlogic.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Jarek Poplawski [Tue, 6 Jan 2009 02:14:19 +0000 (18:14 -0800)]
pkt_sched: cls_u32: Fix locking in u32_change()
New nodes are inserted in u32_change() under rtnl_lock() with wmb(),
so without tcf_tree_lock() like in other classifiers (e.g. cls_fw).
This isn't enough without rmb() on the read side, but on the other
hand adding such barriers doesn't give any savings, so the lock is
added instead.
Reported-by: m0sia <m0sia@plotinka.ru> Signed-off-by: Jarek Poplawski <jarkao2@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Julian Calaby [Tue, 6 Jan 2009 02:13:49 +0000 (18:13 -0800)]
sparc: Fix minor SPARC32 compile error
When CONFIG_PROC_FS is unset, include/linux/interrupt.h defines
init_irq_proc() as an empty function.
arch/sparc/kernel/irq_32.c defines this function unconditionally.
Fix the latter so that it only defines this function when CONFIG_PROC_FS
is set.
This fixes the following error:
arch/sparc/kernel/irq_32.c:672: error: redefinition of 'init_irq_proc'
include/linux/interrupt.h:461: error: previous definition of
'init_irq_proc' was here
This was found using randconfig builds.
Signed-off-by: Julian Calaby <julian.calaby@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Heiko Carstens [Tue, 6 Jan 2009 02:09:02 +0000 (18:09 -0800)]
iucv: fix cpu hotplug
If the iucv module is compiled in/loaded but no user is registered cpu
hot remove doesn't work. Reason for that is that the iucv cpu hotplug
notifier on CPU_DOWN_PREPARE checks if the iucv_buffer_cpumask would
be empty after the corresponding bit would be cleared. However the bit
was never set since iucv wasn't enable. That causes all cpu hot unplug
operations to fail in this scenario.
To fix this use iucv_path_table as an indicator wether iucv is enabled
or not.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Ursula Braun <ursula.braun@de.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
af_iucv: Free iucv path/socket in path_pending callback
Free iucv path after iucv_path_sever() calls in iucv_callback_connreq()
(path_pending() iucv callback).
If iucv_path_accept() fails, free path and free/kill newly created socket.
Signed-off-by: Hendrik Brueckner <brueckner@linux.vnet.ibm.com> Signed-off-by: Ursula Braun <ursula.braun@de.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
If the iucv_path_connect() call fails then return an error code that
corresponds to the iucv_path_connect() failure condition; instead of
returning -ECONNREFUSED for any failure.
This helps to improve error handling for user space applications
(e.g. inform the user that the z/VM guest is not authorized to
connect to other guest virtual machines).
The error return codes are based on those described in connect(2).
Signed-off-by: Hendrik Brueckner <brueckner@linux.vnet.ibm.com> Signed-off-by: Ursula Braun <ursula.braun@de.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
... if you revert a commit, revert the fixups elsewhere that had been
triggered by it. Such as 8c56250f48347750c82ab18d98d647dcf99ca674
(lockdep, UML: fix compilation when CONFIG_TRACE_IRQFLAGS_SUPPORT is not set).
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Al Viro [Mon, 5 Jan 2009 17:18:42 +0000 (17:18 +0000)]
get rid of the last symlink in uml build
We need to make asm-offsets.h contents visible for objects built
with userland headers. Instead of creating a symlink, just have the
file with equivalent include (relative to location of header) created
once. That kills the last symlink used in arch/um builds.
Additionally, both generated headers can become dependencies of
archprepare now, killing the misuse of prepare.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
The flags field of struct ehea_port is only used with test_bit(),
clear_bit() and set_bit() and these interfaces only work on
"unsigned long"s, so change the field to be an "unsigned long". Also,
this field only has two bits defined for it (0 and 1) so will still be
fine if someone builds this driver for a 32 bit arch (at least as far as
this flags field is concerned).
Also note that ehea_driver_flags is only used in ehca_main.c, so make it
static in there.
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
We can't fix this issue in this way, because we now can try
to take the dev_base_lock rwlock as a writer in software interrupt
context and that is not allowed without major surgery elsewhere.
This initial link state problem needs to be solved in some other
way.
Signed-off-by: David S. Miller <davem@davemloft.net>
Michael Kerrisk [Mon, 5 Jan 2009 12:19:16 +0000 (07:19 -0500)]
inotify: fix type errors in interfaces
The problems lie in the types used for some inotify interfaces, both at the kernel level and at the glibc level. This mail addresses the kernel problem. I will follow up with some suggestions for glibc changes.
For the sys_inotify_rm_watch() interface, the type of the 'wd' argument is
currently 'u32', it should be '__s32' . That is Robert's suggestion, and
is consistent with the other declarations of watch descriptors in the
kernel source, in particular, the inotify_event structure in
include/linux/inotify.h:
struct inotify_event {
__s32 wd; /* watch descriptor */
__u32 mask; /* watch mask */
__u32 cookie; /* cookie to synchronize two events */
__u32 len; /* length (including nulls) of name */
char name[0]; /* stub for possible name */
};
The patch makes the changes needed for inotify_rm_watch().
Signed-off-by: Michael Kerrisk <mtk.manpages@googlemail.com> Cc: Robert Love <rlove@google.com> Cc: Vegard Nossum <vegard.nossum@gmail.com> Cc: Ulrich Drepper <drepper@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Fsync currently has a fdatawrite/fdatawait pair around the method call,
and a mutex_lock/unlock of the inode mutex. All callers of fsync have
to duplicate this, but we have a few and most of them don't quite get
it right. This patch adds a new vfs_fsync that takes care of this.
It's a little more complicated as usual as ->fsync might get a NULL file
pointer and just a dentry from nfsd, but otherwise gets afile and we
want to take the mapping and file operations from it when it is there.
Notes on the fsync callers:
- ecryptfs wasn't calling filemap_fdatawrite / filemap_fdatawait on the
lower file
- coda wasn't calling filemap_fdatawrite / filemap_fdatawait on the host
file, and returning 0 when ->fsync was missing
- shm wasn't calling either filemap_fdatawrite / filemap_fdatawait nor
taking i_mutex. Now given that shared memory doesn't have disk
backing not doing anything in fsync seems fine and I left it out of
the vfs_fsync conversion for now, but in that case we might just
not pass it through to the lower file at all but just call the no-op
simple_sync_file directly.
[and now actually export vfs_fsync]
Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Eric Paris [Wed, 17 Dec 2008 18:53:20 +0000 (13:53 -0500)]
sys_execve and sys_uselib do not call into fsnotify
sys_execve and sys_uselib do not call into fsnotify so inotify does not get
open events for these types of syscalls. This patch simply makes the
requisite fsnotify calls.
Signed-off-by: Eric Paris <eparis@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Al Viro [Thu, 4 Dec 2008 15:06:33 +0000 (10:06 -0500)]
inode->i_op is never NULL
We used to have rather schizophrenic set of checks for NULL ->i_op even
though it had been eliminated years ago. You'd need to go out of your
way to set it to NULL explicitly _and_ a bunch of code would die on
such inodes anyway. After killing two remaining places that still
did that bogosity, all that crap can go away.
Al Viro [Thu, 4 Dec 2008 14:57:25 +0000 (09:57 -0500)]
isofs check for NULL ->i_op in root directory is dead code
for one thing it never happens, for another we check that inode
is a directory right after that place anyway (and we'd already
checked that reading it from disk has not failed).
Dmitri Monakhov [Mon, 1 Dec 2008 22:34:56 +0000 (14:34 -0800)]
kill suid bit only for regular files
We don't have to do it because it is useless for non regular files.
In fact block device may trigger this path without dentry->d_inode->i_mutex.
(akpm: concerns were expressed (by me) about S_ISDIR inodes)
Signed-off-by: Dmitri Monakhov <dmonakhov@openvz.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Alain Knaff [Tue, 11 Nov 2008 01:08:08 +0000 (17:08 -0800)]
vfs: lseek(fd, 0, SEEK_CUR) race condition
This patch fixes a race condition in lseek. While it is expected that
unpredictable behaviour may result while repositioning the offset of a
file descriptor concurrently with reading/writing to the same file
descriptor, this should not happen when merely *reading* the file
descriptor's offset.
Unfortunately, the only portable way in Unix to read a file
descriptor's offset is lseek(fd, 0, SEEK_CUR); however executing this
concurrently with read/write may mess up the position.
[with fixes from akpm]
Signed-off-by: Alain Knaff <alain@knaff.lu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Tiger Yang [Tue, 9 Dec 2008 08:42:51 +0000 (16:42 +0800)]
ocfs2: calculate and reserve credits for xattr value in mknod
We extend the credits for xattr's large value in set_value_outside
before, this can give rise to a credits issue when we set one security
entry and two acl entries duing mknod. As we remove extend_trans form
set_value_outside, we must calculate and reserve the credits for
xattr's large value in mknod.
Signed-off-by: Tiger Yang <tiger.yang@oracle.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
Tao Ma [Thu, 4 Dec 2008 22:20:56 +0000 (06:20 +0800)]
ocfs2/xattr: fix credits calculation during index create
When creating a xattr index block, the old calculation forget
to add credits for the meta change of the alloc file. So add
more credits and more comments to explain it.
Signed-off-by: Tao Ma <tao.ma@oracle.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
Tao Ma [Thu, 4 Dec 2008 22:20:55 +0000 (06:20 +0800)]
ocfs2/xattr: Always updating ctime during xattr set.
In xattr set, we should always update ctime if the operation goes
sucessfully. The old one mistakenly put it in ocfs2_xattr_set_entry
which is only called when we set xattr in inode or xattr block. The
side benefit is that it resolve the bug 1052 since in that scenario,
ocfs2_calc_xattr_set_need only calc out the xattr set credits while
ocfs2_xattr_set_entry update the inode also which isn't concerned with
the process of xattr set.
Signed-off-by: Tao Ma <tao.ma@oracle.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
Tao Ma [Thu, 4 Dec 2008 22:20:54 +0000 (06:20 +0800)]
ocfs2/xattr: Remove extend_trans call and add its credits from the beginning
Actually, when setting a new xattr value, we know it from the very
beginning, and it isn't like the extension of bucket in which case
we can't figure it out. So remove ocfs2_extend_trans in that function
and calculate it before the transaction. It also relieve acl operation
from the worry about the side effect of ocfs2_extend_trans.
Signed-off-by: Tao Ma <tao.ma@oracle.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
Sunil Mushran [Tue, 16 Dec 2008 23:49:23 +0000 (15:49 -0800)]
ocfs2/dlm: Fix race during lockres mastery
dlm_get_lock_resource() is supposed to return a lock resource with a proper
master. If multiple concurrent threads attempt to lookup the lockres for the
same lockid while the lock mastery in underway, one or more threads are likely
to return a lockres without a proper master.
This patch makes the threads wait in dlm_get_lock_resource() while the mastery
is underway, ensuring all threads return the lockres with a proper master.
This issue is known to be limited to users using the flock() syscall. For all
other fs operations, the ocfs2 dlmglue layer serializes the dlm op for each
lockid.
Users encountering this bug will see flock() return EINVAL and dmesg have the
following error:
ERROR: Dlm error "DLM_BADARGS" while calling dlmlock on resource <LOCKID>: bad api args
Reported-by: Coly Li <coyli@suse.de> Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
Sunil Mushran [Tue, 16 Dec 2008 23:49:22 +0000 (15:49 -0800)]
ocfs2/dlm: Fix race in adding/removing lockres' to/from the tracking list
This patch adds a new lock, dlm->tracking_lock, to protect adding/removing
lockres' to/from the dlm->tracking_list. We were previously using dlm->spinlock
for the same, but that proved inadequate as we could be freeing a lockres from
a context that did not hold that lock. As the new lock only protects this list,
we can explicitly take it when removing the lockres from the tracking list.
This bug was exposed when testing multiple processes concurrently flock() the
same file.
Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
Sunil Mushran [Tue, 16 Dec 2008 23:49:20 +0000 (15:49 -0800)]
ocfs2/dlm: Clean up errors in dlm_proxy_ast_handler()
Patch cleans printed errors in dlm_proxy_ast_handler(). The errors now includes
the node number that sent the (b)ast. Also it reduces the number of endian swaps
of the cookie.
Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
Sunil Mushran [Tue, 16 Dec 2008 23:49:19 +0000 (15:49 -0800)]
ocfs2/dlm: Fix a race between migrate request and exit domain
Patch address a racing migrate request message and an exit domain message.
Instead of blocking exit domains for the duration of the migrate, we ignore
failure to deliver that message. This is because an exiting domain should
not have any active locks and thus has no role to play in the migration.
Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
Joel Becker [Tue, 16 Dec 2008 21:54:40 +0000 (13:54 -0800)]
ocfs2: One more hamming code optimization.
The previous optimization used a fast find-highest-bit-set operation to
give us a good starting point in calc_code_bit(). This version lets the
caller cache the previous code buffer bit offset. Thus, the next call
always starts where the last one left off.
This reduces the calculation another 39%, for a total 80% reduction from
the original, naive implementation. At least, on my machine. This also
brings the parity calculation to within an order of magnitude of the
crc32 calculation.
Signed-off-by: Joel Becker <joel.becker@oracle.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
Joel Becker [Tue, 16 Dec 2008 02:24:33 +0000 (18:24 -0800)]
ocfs2: Another hamming code optimization.
In the calc_code_bit() function, we must find all powers of two beneath
the code bit number, *after* it's shifted by those powers of two. This
requires a loop to see where it ends up.
We can optimize it by starting at its most significant bit. This shaves
32% off the time, for a total of 67.6% shaved off of the original, naive
implementation.
Signed-off-by: Joel Becker <joel.becker@oracle.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
Joel Becker [Tue, 16 Dec 2008 01:13:48 +0000 (17:13 -0800)]
ocfs2: Don't hand-code xor in ocfs2_hamming_encode().
When I wrote ocfs2_hamming_encode(), I was following documentation of
the algorithm and didn't have quite the (possibly still imperfect) grasp
of it I do now. As part of this, I literally hand-coded xor. I would
test a bit, and then add that bit via xor to the parity word.
I can, of course, just do a single xor of the parity word and the source
word (the code buffer bit offset). This cuts CPU usage by 53% on a
mostly populated buffer (an inode containing utmp.h inline).
Joel
Signed-off-by: Joel Becker <joel.becker@oracle.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
Mark Fasheh [Thu, 11 Dec 2008 01:36:25 +0000 (17:36 -0800)]
ocfs2: Add directory block trailers.
Future ocfs2 features metaecc and indexed directories need to store a
little bit of data in each dirblock. For compatibility, we place this
in a trailer at the end of the dirblock. The trailer plays itself as an
empty dirent, so that if the features are turned off, it can be reused
without requiring a tunefs scan.
This code adds the trailer and validates it when the block is read in.
[ Mark is the original author, but I reinserted this code before his
dir index work. -- Joel ]
Signed-off-by: Joel Becker <joel.becker@oracle.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
Joel Becker [Wed, 10 Dec 2008 00:11:49 +0000 (16:11 -0800)]
ocfs2: Use proper journal_access function in xattr.c
Change the rest of the naked ocfs2_journal_access() calls in
fs/ocfs2/xattr.c to use the appropriate ocfs2_journal_access_*() call
for their metadata type.
Signed-off-by: Joel Becker <joel.becker@oracle.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
Joel Becker [Tue, 9 Dec 2008 23:58:35 +0000 (15:58 -0800)]
ocfs2: Use ocfs2_xattr_value_buf in ocfs2_xattr_set_entry().
ocfs2_xattr_set_entry is the function that knows what type of block it
is setting into. This is what we wanted from ocfs2_xattr_value_buf.
Plus, moving the value buf up into ocfs2_xattr_set_entry() allows us to
pass it into ocfs2_xattr_set_value_outside() and ocfs2_xattr_cleanup().
Signed-off-by: Joel Becker <joel.becker@oracle.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
Joel Becker [Tue, 9 Dec 2008 23:46:15 +0000 (15:46 -0800)]
ocfs2: Pass value buf to ocfs2_xattr_update_entry().
ocfs2_xattr_update_entry() updates the entry portion of an xattr buffer.
This can be part of multiple metadata block types, so pass the buffer in
via an ocfs2_xattr_value_buf.
Signed-off-by: Joel Becker <joel.becker@oracle.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
Joel Becker [Tue, 9 Dec 2008 23:01:04 +0000 (15:01 -0800)]
ocfs2: Pass ocfs2_xattr_value_buf into ocfs2_xattr_value_truncate().
The callers of ocfs2_xattr_value_truncate() now pass in
ocfs2_xattr_value_bufs. These callers are the ones that calculated the
xv location, so they are the right starting point.
Signed-off-by: Joel Becker <joel.becker@oracle.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
Joel Becker [Tue, 9 Dec 2008 22:36:50 +0000 (14:36 -0800)]
ocfs2: Pull ocfs2_xattr_value_buf up into ocfs2_xattr_value_truncate().
Place an ocfs2_xattr_value_buf in ocfs2_xattr_value_truncate() and pass
it down to ocfs2_xattr_shrink_size(). We can also pass it into
ocfs2_xattr_extend_allocation(), replacing its ocfs2_xattr_value_buf.
Signed-off-by: Joel Becker <joel.becker@oracle.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
Joel Becker [Tue, 9 Dec 2008 22:24:33 +0000 (14:24 -0800)]
ocfs2: Create ocfs2_xattr_value_buf.
When an ocfs2 extended attribute is large enough to require its own
allocation tree, we root it with an ocfs2_xattr_value_root. However,
these roots can be a part of inodes, xattr blocks, or xattr buckets.
Thus, they need a different journal access function for each container.
We wrap the bh, its journal access function, and the value root (xv) in
a structure called ocfs2_xattr_valu_buf. This is a package that can
be passed around. In this first pass, we simply pass it to the
extent tree code.
Signed-off-by: Joel Becker <joel.becker@oracle.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
Joel Becker [Fri, 5 Dec 2008 19:19:37 +0000 (11:19 -0800)]
ocfs2: Add ecc and checksums to ocfs2 xattr buckets.
The xattr bucket can span multiple blocks on disk. We have wrappers
for this structure in the code. We use the new multi-block ecc calls to
calculate and validate the bucket.
Signed-off-by: Joel Becker <joel.becker@oracle.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
Joel Becker [Sat, 18 Oct 2008 02:25:01 +0000 (19:25 -0700)]
ocfs2: Use metadata-specific ocfs2_journal_access_*() functions.
The per-metadata-type ocfs2_journal_access_*() functions hook up jbd2
commit triggers and allow us to compute metadata ecc right before the
buffers are written out. This commit provides ecc for inodes, extent
blocks, group descriptors, and quota blocks. It is not safe to use
extened attributes and metaecc at the same time yet.
The ocfs2_extent_tree and ocfs2_path abstractions in alloc.c both hide
the type of block at their root. Before, it didn't matter, but now the
root block must use the appropriate ocfs2_journal_access_*() function.
To keep this abstract, the structures now have a pointer to the matching
journal_access function and a wrapper call to call it.
A few places use naked ocfs2_write_block() calls instead of adding the
blocks to the journal. We make sure to calculate their checksum and ecc
before the write.
Since we pass around the journal_access functions. Let's typedef them
in ocfs2.h.
Signed-off-by: Joel Becker <joel.becker@oracle.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
Let's call that ocfs2_new_path_from_path(). The rest do similar things
from struct ocfs2_extent_tree. Let's call those
ocfs2_new_path_from_et(). This will make the next change easier.
Signed-off-by: Joel Becker <joel.becker@oracle.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
Joel Becker [Thu, 11 Sep 2008 22:53:07 +0000 (15:53 -0700)]
ocfs2: Add journal_access functions with jbd2 triggers.
We create wrappers for ocfs2_journal_access() that are specific to the
type of metadata block. This allows us to associate jbd2 commit
triggers with the block. The triggers will compute metadata ecc in a
future commit.
Signed-off-by: Joel Becker <joel.becker@oracle.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
Joel Becker [Fri, 17 Oct 2008 21:55:01 +0000 (14:55 -0700)]
ocfs2: block read meta ecc.
Add block check calls to the read_block validate functions. This is the
almost all of the read-side checking of metaecc. xattr buckets are not checked
yet. Writes are also unchecked, and so a read-write mount will quickly fail.
Signed-off-by: Joel Becker <joel.becker@oracle.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
Joel Becker [Fri, 17 Oct 2008 00:54:25 +0000 (17:54 -0700)]
ocfs2: Add the underlying blockcheck code.
This is the code that computes crc32 and ecc for ocfs2 metadata blocks.
There are high-level functions that check whether the filesystem has the
ecc feature, mid-level functions that work on a single block or array of
buffer_heads, and the low-level ecc hamming code that can handle
multiple buffers like crc32_le().
It's not hooked up to the filesystem yet.
Signed-off-by: Joel Becker <joel.becker@oracle.com> Cc: Christoph Hellwig <hch@lst.de> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
Joel Becker [Fri, 17 Oct 2008 00:50:30 +0000 (17:50 -0700)]
ocfs2: Add the on-disk structures for metadata checksums.
Define struct ocfs2_block_check, an 8-byte structure containing a 32bit
crc32_le and a 16bit hamming code ecc. This will be used for metadata
checksums. Add the structure to free spaces in the various metadata
structures.
Add the OCFS2_FEATURE_INCOMPAT_META_ECC bit.
Signed-off-by: Joel Becker <joel.becker@oracle.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
Joel Becker [Thu, 11 Sep 2008 22:35:47 +0000 (15:35 -0700)]
jbd2: Add buffer triggers
Filesystems often to do compute intensive operation on some
metadata. If this operation is repeated many times, it can be very
expensive. It would be much nicer if the operation could be performed
once before a buffer goes to disk.
This adds triggers to jbd2 buffer heads. Just before writing a metadata
buffer to the journal, jbd2 will optionally call a commit trigger associated
with the buffer. If the journal is aborted, an abort trigger will be
called on any dirty buffers as they are dropped from pending
transactions.
ocfs2 will use this feature.
Initially I tried to come up with a more generic trigger that could be
used for non-buffer-related events like transaction completion. It
doesn't tie nicely, because the information a buffer trigger needs
(specific to a journal_head) isn't the same as what a transaction
trigger needs (specific to a tranaction_t or perhaps journal_t). So I
implemented a buffer set, with the understanding that
journal/transaction wide triggers should be implemented separately.
There is only one trigger set allowed per buffer. I can't think of any
reason to attach more than one set. Contrast this with a journal or
transaction in which multiple places may want to watch the entire
transaction separately.
The trigger sets are considered static allocation from the jbd2
perspective. ocfs2 will just have one trigger set per block type,
setting the same set on every bh of the same type.
Signed-off-by: Joel Becker <joel.becker@oracle.com> Cc: "Theodore Ts'o" <tytso@mit.edu> Cc: <linux-ext4@vger.kernel.org> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
Tao Ma [Sun, 14 Dec 2008 22:03:41 +0000 (06:03 +0800)]
ocfs2/quota: Add QUOTA in mlog_attribute.
A new mlog mask has to be added into mlog_attribute before it can
be really used in mlog. ML_QUOTA is only added in masklog.h, so
add it to the array to enable it.
Signed-off-by: Tao Ma <tao.ma@oracle.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
Joel Becker [Wed, 26 Nov 2008 23:25:41 +0000 (15:25 -0800)]
ocfs2: Pass xs->bucket into ocfs2_add_new_xattr_bucket().
Pass the actual target bucket for insert through to
ocfs2_add_new_xattr_bucket(). Now growing a bucket has no buffer_head
knowledge.
ocfs2_add_new_xattr_bucket() leavs xs->bucket in the proper state for
insert. However, it doesn't update the rest of the search fields in xs,
so we still have to relse() and re-find. That's OK, because everything
is cached.
Signed-off-by: Joel Becker <joel.becker@oracle.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
Joel Becker [Wed, 26 Nov 2008 23:08:44 +0000 (15:08 -0800)]
ocfs2: Move buckets up into ocfs2_add_new_xattr_bucket().
Lift the buckets from ocfs2_add_new_xattr_cluster() up into
ocfs2_add_new_xattr_bucket(). Now ocfs2_add_new_xattr_cluster()
doesn't deal with buffer_heads. In fact, we no longer have to play
get_bh() tricks at all.
Signed-off-by: Joel Becker <joel.becker@oracle.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
Joel Becker [Wed, 26 Nov 2008 22:43:31 +0000 (14:43 -0800)]
ocfs2: Move buckets up into ocfs2_add_new_xattr_cluster().
Lift the buckets from ocfs2_adjust_xattr_cross_cluster() up into
ocfs2_add_new_xattr_cluster(). Now ocfs2_adjust_xattr_cross_cluster()
doesn't deal with buffer_heads.
Signed-off-by: Joel Becker <joel.becker@oracle.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
Joel Becker [Wed, 26 Nov 2008 22:25:21 +0000 (14:25 -0800)]
ocfs2: Pass buckets into ocfs2_mv_xattr_bucket_cross_cluster().
Now that ocfs2_adjust_xattr_cross_cluster() has buckets, it can pass
them into ocfs2_mv_xattr_bucket_cross_cluster(). It no longer has to
care about buffer_heads. The manipulation of first_bh and header_bh
moves up to ocfs2_adjust_xattr_cross_cluster().
Signed-off-by: Joel Becker <joel.becker@oracle.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
Joel Becker [Wed, 26 Nov 2008 21:18:31 +0000 (13:18 -0800)]
ocfs2: ocfs2_mv_xattr_buckets() can handle a partial cluster now.
If you look at ocfs2_mv_xattr_bucket_cross_cluster(), you'll notice that
two-thirds of the code is almost identical to ocfs2_mv_xattr_buckets().
The only difference is that ocfs2_mv_xattr_buckets() moves a whole
cluster's worth, while ocfs2_mv_xattr_bucket_cross_cluster() moves half
the cluster.
We change ocfs2_mv_xattr_buckets() to allow moving partial clusters.
The original caller of ocfs2_mv_xattr_buckets() still moves the whole
cluster's worth - it just passes a start_bucket of 0.
Signed-off-by: Joel Becker <joel.becker@oracle.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
Joel Becker [Wed, 26 Nov 2008 21:02:18 +0000 (13:02 -0800)]
ocfs2: Rename ocfs2_cp_xattr_cluster() to ocfs2_mv_xattr_buckets().
ocfs2_cp_xattr_cluster() takes the last cluster of an xattr extent,
copies its buckets to the front of a new extent, and then shrinks the bucket
count of the original extent. So it's really moving the data, not
copying it.
While we're here, the function doesn't need a buffer_head for the old
extent, just the block number.
Signed-off-by: Joel Becker <joel.becker@oracle.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
Joel Becker [Wed, 26 Nov 2008 03:58:16 +0000 (19:58 -0800)]
ocfs2: Use ocfs2_cp_xattr_bucket() in ocfs2_mv_xattr_bucket_cross_cluster().
The buffer copy loop of ocfs2_mv_xattr_bucket_cross_cluster() actually
looks a lot like ocfs2_cp_xattr_bucket(). Let's just use that instead.
We also use bucket operations to update the buckets at the start of each
extent.
Signed-off-by: Joel Becker <joel.becker@oracle.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
Joel Becker [Wed, 26 Nov 2008 03:00:15 +0000 (19:00 -0800)]
ocfs2: Explain t_is_new in ocfs2_cp_xattr_cluster().
I was unsure of the JOURNAL_ACCESS parameters in
ocfs2_cp_xattr_cluster(). They're based on the function argument
't_is_new', but I couldn't quite figure out how t_is_new mapped to
allocation. ocfs2_cp_xattr_cluster() actually overwrites the target,
regardless of t_is_new.
Well, I just figured it out. So I'm adding a big fat comment for those
who come after me. ocfs2_divide_xattr_cluster() has the same behavior.
Signed-off-by: Joel Becker <joel.becker@oracle.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
Joel Becker [Wed, 26 Nov 2008 02:36:42 +0000 (18:36 -0800)]
ocfs2: Dirty the entire first bucket in ocfs2_cp_xattr_cluster().
ocfs2_cp_xattr_cluster() takes the last bucket of a full extent and
copies it over to a new extent. It then updates the headers of both
extents to reflect the new state. It is passed the first bh of
the first bucket in order to update that first extent's bucket count.
It reads and dirties the first bh of the new extent for the same reason.
However, future code wants to always dirty the entire bucket when it
is changed. So it is changed to read the entire bucket it is updating
for both extents.
Signed-off-by: Joel Becker <joel.becker@oracle.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
Joel Becker [Wed, 26 Nov 2008 01:06:40 +0000 (17:06 -0800)]
ocfs2: Dirty the entire first bucket in ocfs2_extend_xattr_bucket()
ocfs2_extend_xattr_bucket() takes an extent of buckets and shifts some
of them down to make room for a new xattr. It is passed the first bh of
the first bucket, because that is where we store the number of buckets
in the extent.
However, future code wants to always dirty the entire bucket when it
is changed. So let's pass the entire bucket into this function, skip
any block reads (we have them), and add the access/dirty logic. We also
can skip passing in the target bucket bh - we only need its block
number.
Signed-off-by: Joel Becker <joel.becker@oracle.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
Tao Ma [Thu, 11 Dec 2008 00:54:11 +0000 (08:54 +0800)]
ocfs2: Narrow the transaction for deleting xattrs from a bucket.
We move the transaction into the loop because in
ocfs2_remove_extent, we will double the credits in function
ocfs2_extend_rotate_transaction. So if we have a large loop
number, we will soon waste much the journal space.
Signed-off-by: Tao Ma <tao.ma@oracle.com> Signed-off-by: Joel Becker <joel.becker@oracle.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
projects / mirror_ubuntu-focal-kernel.git / log