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* tracing: Return error if register_ftrace_function_probe() fails for ↵Steven Rostedt (Red Hat)2013-05-091-2/+9
| | | | | | | | | | | | | | | | | event_enable_func() register_ftrace_function_probe() returns the number of functions it registered, which can be zero, it can also return a negative number if something went wrong. But event_enable_func() only checks for the case that it didn't register anything, it needs to also check for the case that something went wrong and return that error code as well. Added some comments about the code as well, to make it more understandable. Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
* tracing: Don't succeed if event_enable_func did not register anythingMasami Hiramatsu2013-05-091-1/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | Return 0 instead of the number of activated ftrace function probes if event_enable_func succeeded and return an error code if it failed or did not register any functions. But it currently returns the number of registered functions and if it didn't register anything, it returns 0, but that is considered success. This also fixes the return value. As if it succeeds, it returns the number of functions that were enabled, which is returned back to the user in ftrace_regex_write (the write() return code). If only one function is enabled, then the return code of the write is one, and this can confuse the user program in thinking it only wrote 1 byte. Link: http://lkml.kernel.org/r/20130509054413.30398.55650.stgit@mhiramat-M0-7522 Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Tom Zanussi <tom.zanussi@intel.com> Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> [ Rewrote change log to reflect that this fixes two bugs - SR ] Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
* ring-buffer: Select IRQ_WORKSteven Rostedt (Red Hat)2013-05-031-1/+1
| | | | | | | | | | | | | | | As the wake up logic for waiters on the buffer has been moved from the tracing code to the ring buffer, it requires also adding IRQ_WORK as the wake up code is performed via irq_work. This fixes compile breakage when a user of the ring buffer is selected but tracing and irq_work are not. Link http://lkml.kernel.org/r/20130503115332.GT8356@rric.localhost Cc: Arnd Bergmann <arnd@arndb.de> Reported-by: Robert Richter <rric@kernel.org> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
* tracing: Fix small merge bugSteven Rostedt2013-04-301-1/+1
| | | | | | | | | During the 3.10 merge, a conflict happened and the resolution was almost, but not quite, correct. An if statement was reversed. Signed-off-by: Steven Rostedt <rostedt@goodmis.org> [ Duh. That was just silly of me - Linus ] Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge tag 'localmodconfig-v3.10' of ↵Linus Torvalds2013-04-301-10/+16
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-kconfig Pull localmodconfig changes from Steven Rostedt: "A bug was recently found in the make localmodconfig where it would miss dependencies of config files are include in other config files inside an if statement. Also added a debug print that helped in solving this bug." * tag 'localmodconfig-v3.10' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-kconfig: localmodconfig: Process source kconfig files as they are found localmodconfig: Add debug prints for dependencies of module configs
| * localmodconfig: Process source kconfig files as they are foundSteven Rostedt2013-04-291-10/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | A bug was reported that caused localmodconfig to not keep all the dependencies of ATH9K. This was caused by the kconfig file: In drivers/net/wireless/ath/Kconfig: --- if ATH_CARDS config ATH_DEBUG bool "Atheros wireless debugging" ---help--- Say Y, if you want to debug atheros wireless drivers. Right now only ath9k makes use of this. source "drivers/net/wireless/ath/ath5k/Kconfig" source "drivers/net/wireless/ath/ath9k/Kconfig" source "drivers/net/wireless/ath/carl9170/Kconfig" source "drivers/net/wireless/ath/ath6kl/Kconfig" source "drivers/net/wireless/ath/ar5523/Kconfig" source "drivers/net/wireless/ath/wil6210/Kconfig" endif --- The current way kconfig works, it processes new source files after the first file is completed. It creates an array of new source config files and when the one file is finished, it continues with the next file. Unfortunately, this means that it loses the fact that the source file is within an "if" statement, and this means that each of these source file's configs will not have the proper dependencies set. As ATH9K requires ATH_CARDS set, the localmodconfig did not see that dependency, and did not enable ATH_CARDS. When the oldconfig was run, it forced ATH9K to be disabled. Link: http://lkml.kernel.org/r/alpine.DEB.2.02.1304291022320.9234@oneiric Cc: stable@vger.kernel.org # 3.8+ Reported-by: Robert P. J. Day <rpjday@crashcourse.ca> Tested-by: Robert P. J. Day <rpjday@crashcourse.ca> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
| * localmodconfig: Add debug prints for dependencies of module configsSteven Rostedt2013-04-291-0/+9
| | | | | | | | | | | | | | | | | | | | | | | | When a config for a module is added to the list to save in the final config file, add a print to show what dependencies are used. This is useful to debug when a config is disabled by the make oldconfig after localmodconfig is finished. This print only appears if the environment variable LOCALMODCONFIG_DEBUG is defined. Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
* | Merge branch 'akpm' (incoming from Andrew)Linus Torvalds2013-04-29218-2303/+2859
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Merge second batch of fixes from Andrew Morton: - various misc bits - some printk updates - a new "SRAM" driver. - MAINTAINERS updates - the backlight driver queue - checkpatch updates - a few init/ changes - a huge number of drivers/rtc changes - fatfs updates - some lib/idr.c work - some renaming of the random driver interfaces * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (285 commits) net: rename random32 to prandom net/core: remove duplicate statements by do-while loop net/core: rename random32() to prandom_u32() net/netfilter: rename random32() to prandom_u32() net/sched: rename random32() to prandom_u32() net/sunrpc: rename random32() to prandom_u32() scsi: rename random32() to prandom_u32() lguest: rename random32() to prandom_u32() uwb: rename random32() to prandom_u32() video/uvesafb: rename random32() to prandom_u32() mmc: rename random32() to prandom_u32() drbd: rename random32() to prandom_u32() kernel/: rename random32() to prandom_u32() mm/: rename random32() to prandom_u32() lib/: rename random32() to prandom_u32() x86: rename random32() to prandom_u32() x86: pageattr-test: remove srandom32 call uuid: use prandom_bytes() raid6test: use prandom_bytes() sctp: convert sctp_assoc_set_id() to use idr_alloc_cyclic() ...
| * | net: rename random32 to prandomAkinobu Mita2013-04-291-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit 496f2f93b1cc ("random32: rename random32 to prandom") renamed random32() and srandom32() to prandom_u32() and prandom_seed() respectively. net_random() and net_srandom() need to be redefined with prandom_* in order to finish the naming transition. While I'm at it, enclose macro argument of net_srandom() with parenthesis. Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Cc: "David S. Miller" <davem@davemloft.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * | net/core: remove duplicate statements by do-while loopAkinobu Mita2013-04-291-9/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Remove duplicate statements by using do-while loop instead of while loop. - A; - while (e) { + do { A; - } + } while (e); Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Cc: "David S. Miller" <davem@davemloft.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * | net/core: rename random32() to prandom_u32()Akinobu Mita2013-04-291-14/+15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use preferable function name which implies using a pseudo-random number generator. Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Cc: "David S. Miller" <davem@davemloft.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * | net/netfilter: rename random32() to prandom_u32()Akinobu Mita2013-04-291-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use preferable function name which implies using a pseudo-random number generator. Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Cc: Pablo Neira Ayuso <pablo@netfilter.org> Cc: Patrick McHardy <kaber@trash.net> Cc: "David S. Miller" <davem@davemloft.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * | net/sched: rename random32() to prandom_u32()Akinobu Mita2013-04-291-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use preferable function name which implies using a pseudo-random number generator. Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Cc: Stephen Hemminger <shemminger@vyatta.com> Cc: Jamal Hadi Salim <jhs@mojatatu.com> Cc: "David S. Miller" <davem@davemloft.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * | net/sunrpc: rename random32() to prandom_u32()Akinobu Mita2013-04-291-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use preferable function name which implies using a pseudo-random number generator. Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Cc: "J. Bruce Fields" <bfields@fieldses.org> Acked-by: Trond Myklebust <Trond.Myklebust@netapp.com> Cc: "David S. Miller" <davem@davemloft.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * | scsi: rename random32() to prandom_u32()Akinobu Mita2013-04-292-5/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use preferable function name which implies using a pseudo-random number generator. Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Cc: "James E.J. Bottomley" <JBottomley@parallels.com> Cc: Robert Love <robert.w.love@intel.com> Cc: James Smart <james.smart@emulex.com> Cc: Andrew Vasquez <andrew.vasquez@qlogic.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * | lguest: rename random32() to prandom_u32()Akinobu Mita2013-04-291-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use preferable function name which implies using a pseudo-random number generator. Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Acked-by: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * | uwb: rename random32() to prandom_u32()Akinobu Mita2013-04-291-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use preferable function name which implies using a pseudo-random number generator. Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Cc: Greg KH <greg@kroah.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * | video/uvesafb: rename random32() to prandom_u32()Akinobu Mita2013-04-291-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use preferable function name which implies using a pseudo-random number generator. Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Cc: Michal Januszewski <spock@gentoo.org> Cc: Florian Tobias Schandinat <FlorianSchandinat@gmx.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * | mmc: rename random32() to prandom_u32()Akinobu Mita2013-04-291-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use preferable function name which implies using a pseudo-random number generator. Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Cc: Chris Ball <cjb@laptop.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * | drbd: rename random32() to prandom_u32()Akinobu Mita2013-04-291-2/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use preferable function name which implies using a pseudo-random number generator. Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Cc: Jens Axboe <axboe@kernel.dk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * | kernel/: rename random32() to prandom_u32()Akinobu Mita2013-04-292-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | Use preferable function name which implies using a pseudo-random number generator. Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * | mm/: rename random32() to prandom_u32()Akinobu Mita2013-04-291-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | Use preferable function name which implies using a pseudo-random number generator. Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * | lib/: rename random32() to prandom_u32()Akinobu Mita2013-04-292-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | Use preferable function name which implies using a pseudo-random number generator. Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * | x86: rename random32() to prandom_u32()Akinobu Mita2013-04-291-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use preferable function name which implies using a pseudo-random number generator. Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Acked-by: H. Peter Anvin <hpa@zytor.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@redhat.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * | x86: pageattr-test: remove srandom32 callAkinobu Mita2013-04-291-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | pageattr-test calls srandom32() once every test iteration. But calling srandom32() after late_initcalls is not meaningfull. Because the random states for random32() is mixed by good random numbers in late_initcall prandom_reseed(). So this removes the call to srandom32(). Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Acked-by: H. Peter Anvin <hpa@zytor.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@redhat.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * | uuid: use prandom_bytes()Akinobu Mita2013-04-291-7/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use prandom_bytes() to generate 16 bytes of pseudo-random bytes. Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Cc: "Theodore Ts'o" <tytso@mit.edu> Cc: Huang Ying <ying.huang@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * | raid6test: use prandom_bytes()Akinobu Mita2013-04-291-7/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use prandom_bytes() to generate random bytes for test data. Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Cc: Dan Williams <djbw@fb.com> Cc: Vinod Koul <vinod.koul@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * | sctp: convert sctp_assoc_set_id() to use idr_alloc_cyclic()Jeff Layton2013-04-291-14/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Jeff Layton <jlayton@redhat.com> Cc: Vlad Yasevich <vyasevich@gmail.com> Cc: Sridhar Samudrala <sri@us.ibm.com> Cc: Neil Horman <nhorman@tuxdriver.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Tejun Heo <tj@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * | inotify: convert inotify_add_to_idr() to use idr_alloc_cyclic()Jeff Layton2013-04-292-7/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Jeff Layton <jlayton@redhat.com> Cc: John McCutchan <john@johnmccutchan.com> Cc: Robert Love <rlove@rlove.org> Cc: Eric Paris <eparis@parisplace.org> Cc: Tejun Heo <tj@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * | nfsd: convert nfs4_alloc_stid() to use idr_alloc_cyclic()Jeff Layton2013-04-291-6/+1
| | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Jeff Layton <jlayton@redhat.com> Acked-by: "J. Bruce Fields" <bfields@fieldses.org> Cc: Tejun Heo <tj@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * | drivers/infiniband/hw/mlx4: convert to using idr_alloc_cyclic()Jeff Layton2013-04-291-3/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Jeff Layton <jlayton@redhat.com> Cc: Tejun Heo <tj@kernel.org> Cc: Jack Morgenstein <jackm@dev.mellanox.co.il> Cc: Or Gerlitz <ogerlitz@mellanox.com> Cc: Roland Dreier <roland@purestorage.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * | drivers/infiniband/hw/amso1100: convert to using idr_alloc_cyclicJeff Layton2013-04-292-3/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Jeff Layton <jlayton@redhat.com> Reviewed-by: Tejun Heo <tj@kernel.org> Cc: Steve Wise <swise@opengridcomputing.com> Cc: Tom Tucker <tom@opengridcomputing.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * | idr: introduce idr_alloc_cyclic()Jeff Layton2013-04-292-0/+29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | As Tejun points out, there are several users of the IDR facility that attempt to use it in a cyclic fashion. These users are likely to see -ENOSPC errors after the counter wraps one or more times however. This patchset adds a new idr_alloc_cyclic routine and converts several of these users to it. Many of these users are in obscure parts of the kernel, and I don't have a good way to test some of them. The change is pretty straightforward though, so hopefully it won't be an issue. There is one other cyclic user of idr_alloc that I didn't touch in ipc/util.c. That one is doing some strange stuff that I didn't quite understand, but it looks like it should probably be converted later somehow. This patch: Thus spake Tejun Heo: Ooh, BTW, the cyclic allocation is broken. It's prone to -ENOSPC after the first wraparound. There are several cyclic users in the kernel and I think it probably would be best to implement cyclic support in idr. This patch does that by adding new idr_alloc_cyclic function that such users in the kernel can use. With this, there's no need for a caller to keep track of the last value used as that's now tracked internally. This should prevent the ENOSPC problems that can hit when the "last allocated" counter exceeds INT_MAX. Later patches will convert existing cyclic users to the new interface. Signed-off-by: Jeff Layton <jlayton@redhat.com> Reviewed-by: Tejun Heo <tj@kernel.org> Cc: "David S. Miller" <davem@davemloft.net> Cc: "J. Bruce Fields" <bfields@fieldses.org> Cc: Eric Paris <eparis@parisplace.org> Cc: Jack Morgenstein <jackm@dev.mellanox.co.il> Cc: John McCutchan <john@johnmccutchan.com> Cc: Neil Horman <nhorman@tuxdriver.com> Cc: Or Gerlitz <ogerlitz@mellanox.com> Cc: Robert Love <rlove@rlove.org> Cc: Roland Dreier <roland@purestorage.com> Cc: Sridhar Samudrala <sri@us.ibm.com> Cc: Steve Wise <swise@opengridcomputing.com> Cc: Tom Tucker <tom@opengridcomputing.com> Cc: Vlad Yasevich <vyasevich@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * | Documentation: update nfs option in filesystem/vfat.txtNamjae Jeon2013-04-291-5/+21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add descriptions about 'stale_rw' and 'nostale_ro' nfs options in filesystem/vfat.txt Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com> Signed-off-by: Ravishankar N <ravi.n1@samsung.com> Signed-off-by: Amit Sahrawat <a.sahrawat@samsung.com> Acked-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp> Acked-by: Rob Landley <rob@landley.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * | fat (exportfs): rebuild directory-inode if fat_dget()Namjae Jeon2013-04-294-2/+78
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch enables rebuilding of directory inodes which are not present in the cache.This is done by traversing the disk clusters to find the directory entry of the parent directory and using its i_pos to build the inode. The traversal is done by fat_scan_logstart() which is similar to fat_scan() but matches i_pos values instead of names.fat_scan_logstart() needs an inode parameter to work, for which a dummy inode is created by it's caller fat_rebuild_parent(). This dummy inode is destroyed after the traversal completes. All this is done only if the nostale_ro nfs mount option is specified. Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com> Signed-off-by: Ravishankar N <ravi.n1@samsung.com> Signed-off-by: Amit Sahrawat <a.sahrawat@samsung.com> Acked-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * | fat (exportfs): rebuild inode if ilookup() failsNamjae Jeon2013-04-293-5/+52
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If the cache lookups fail,use the i_pos value to find the directory entry of the inode and rebuild the inode.Since this involves accessing the FAT media, do this only if the nostale_ro nfs mount option is specified. Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com> Signed-off-by: Ravishankar N <ravi.n1@samsung.com> Signed-off-by: Amit Sahrawat <a.sahrawat@samsung.com> Acked-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * | fat: restructure export_operationsNamjae Jeon2013-04-295-20/+147
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Define two nfs export_operation structures,one for 'stale_rw' mounts and the other for 'nostale_ro'. The latter uses i_pos as a basis for encoding and decoding file handles. Also, assign i_pos to kstat->ino. The logic for rebuilding the inode is added in the subsequent patches. Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com> Signed-off-by: Ravishankar N <ravi.n1@samsung.com> Signed-off-by: Amit Sahrawat <a.sahrawat@samsung.com> Acked-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * | fat: introduce a helper fat_get_blknr_offset()Namjae Jeon2013-04-292-4/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Introduce helper function to get the block number and offset for a given i_pos value. Use it in __fat_write_inode() now and later on in nfs.c Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com> Signed-off-by: Ravishankar N <ravi.n1@samsung.com> Signed-off-by: Amit Sahrawat <a.sahrawat@samsung.com> Acked-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * | fat: move fat_i_pos_read to fat.hNamjae Jeon2013-04-292-14/+14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Move fat_i_pos_read to fat.h so that it can be called from nfs.c in the subsequent patches to encode the file handle. Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com> Signed-off-by: Ravishankar N <ravi.n1@samsung.com> Signed-off-by: Amit Sahrawat <a.sahrawat@samsung.com> Acked-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * | fat: introduce 2 new values for the -o nfs mount optionNamjae Jeon2013-04-292-9/+21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patchset eliminates the client side ESTALE errors when a FAT partition exported over NFS has its dentries evicted from the cache. The idea is to find the on-disk location_'i_pos' of the dirent of the inode that has been evicted and use it to rebuild the inode. This patch: Provide two possible values 'stale_rw' and 'nostale_ro' for the -o nfs mount option.The first one allows all file operations but does not reduce ESTALE errors on memory constrained systems. The second one eliminates ESTALE errors but mounts the filesystem as read-only. Not specifying a value defaults to 'stale_rw'. Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com> Signed-off-by: Ravishankar N <ravi.n1@samsung.com> Signed-off-by: Amit Sahrawat <a.sahrawat@samsung.com> Acked-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * | drivers/rtc/rtc-pcf2123.c: fix error return code in pcf2123_probe()Wei Yongjun2013-04-291-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix to return -ENODEV in the chip not found error handling case instead of 0, as done elsewhere in this function. Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn> Cc: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * | drivers/rtc/rtc-isl12022.c: Remove rtc8564 from isl12022_idAxel Lin2013-04-291-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | rtc8564 appears in i2c_device_id table of both rtc-isl12022.c and rtc-pcf8563.c. Commit 8ea9212cbd65 "rtc-pcf8563: add chip id" added the rtc8564 chip entry to pcf8563. isl12022 driver is modified from pcf8563 driver, so this looks like a copy-paste bug. Signed-off-by: Axel Lin <axel.lin@ingics.com> Cc: Roman Fietze <roman.fietze@telemotive.de> Cc: Jon Smirl <jonsmirl@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * | drivers/rtc/rtc-at91rm9200.c: fix missing iounmapJohan Hovold2013-04-291-3/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add missing iounmap to probe error path and remove. Signed-off-by: Johan Hovold <jhovold@gmail.com> Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * | rtc: rtc-twl: convert twl4030rtc_driver to dev_pm_opsJingoo Han2013-04-291-10/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | Instead of using legacy suspend/resume methods, using newer dev_pm_ops structure allows better control over power management. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * | rtc: rtc-stmp3xxx: convert stmp3xxx_rtcdrv to dev_pm_opsJingoo Han2013-04-291-9/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | Instead of using legacy suspend/resume methods, using newer dev_pm_ops structure allows better control over power management. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * | rtc: rtc-spear: convert spear_rtc_driver to dev_pm_opsJingoo Han2013-04-291-10/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | Instead of using legacy suspend/resume methods, using newer dev_pm_ops structure allows better control over power management. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * | rtc: rtc-puv3: convert puv3_rtc_driver to dev_pm_opsJingoo Han2013-04-291-15/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | Instead of using legacy suspend/resume methods, using newer dev_pm_ops structure allows better control over power management. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * | rtc: rtc-omap: convert omap_rtc_driver to dev_pm_opsJingoo Han2013-04-291-14/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | Instead of using legacy suspend/resume methods, using newer dev_pm_ops structure allows better control over power management. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * | rtc: rtc-coh901331: convert coh901331_driver to dev_pm_opsJingoo Han2013-04-291-13/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | Instead of using legacy suspend/resume methods, using newer dev_pm_ops structure allows better control over power management. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * | rtc: rtc-bfin: convert bfin_rtc_driver to dev_pm_opsJingoo Han2013-04-291-12/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | Instead of using legacy suspend/resume methods, using newer dev_pm_ops structure allows better control over power management. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-06 08:49:22 +0000