- 30 Apr, 2013 40 commits
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Akinobu Mita authored
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>
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Akinobu Mita authored
Use preferable function name which implies using a pseudo-random number generator. Signed-off-by:
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Akinobu Mita authored
Use preferable function name which implies using a pseudo-random number generator. Signed-off-by:
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Akinobu Mita authored
Use preferable function name which implies using a pseudo-random number generator. Signed-off-by:
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Akinobu Mita authored
Use preferable function name which implies using a pseudo-random number generator. Signed-off-by:
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Akinobu Mita authored
Use preferable function name which implies using a pseudo-random number generator. Signed-off-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:
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Akinobu Mita authored
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:
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Akinobu Mita authored
Use prandom_bytes() to generate 16 bytes of pseudo-random bytes. Signed-off-by:
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Akinobu Mita authored
Use prandom_bytes() to generate random bytes for test data. Signed-off-by:
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Jeff Layton authored
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:
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Jeff Layton authored
Signed-off-by:
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Jeff Layton authored
Signed-off-by:
"J. Bruce Fields" <bfields@fieldses.org> Cc: Tejun Heo <tj@kernel.org> Signed-off-by:
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Jeff Layton authored
Signed-off-by:
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Jeff Layton authored
Signed-off-by:
Tejun Heo <tj@kernel.org> Cc: Steve Wise <swise@opengridcomputing.com> Cc: Tom Tucker <tom@opengridcomputing.com> Signed-off-by:
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Jeff Layton authored
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: -
Namjae Jeon authored
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:
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Namjae Jeon authored
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:
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Namjae Jeon authored
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:
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Namjae Jeon authored
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:
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Namjae Jeon authored
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:
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Namjae Jeon authored
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:
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Namjae Jeon authored
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:
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Wei Yongjun authored
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:
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Axel Lin authored
rtc8564 appears in i2c_device_id table of both rtc-isl12022.c and rtc-pcf8563.c. Commit 8ea9212c "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:
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Johan Hovold authored
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:
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Jingoo Han authored
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:
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Jingoo Han authored
Instead of using legacy suspend/resume methods, using newer dev_pm_ops structure allows better control over power management. Signed-off-by:
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Jingoo Han authored
Instead of using legacy suspend/resume methods, using newer dev_pm_ops structure allows better control over power management. Signed-off-by:
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Jingoo Han authored
Instead of using legacy suspend/resume methods, using newer dev_pm_ops structure allows better control over power management. Signed-off-by:
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Jingoo Han authored
Instead of using legacy suspend/resume methods, using newer dev_pm_ops structure allows better control over power management. Signed-off-by:
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Jingoo Han authored
Instead of using legacy suspend/resume methods, using newer dev_pm_ops structure allows better control over power management. Signed-off-by:
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Jingoo Han authored
Instead of using legacy suspend/resume methods, using newer dev_pm_ops structure allows better control over power management. Signed-off-by:
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Jingoo Han authored
Instead of using legacy suspend/resume methods, using newer dev_pm_ops structure allows better control over power management. Signed-off-by:
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Axel Lin authored
Current code has defines for registers, use the defines rather than magic numbers. Signed-off-by:
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Jingoo Han authored
Use devm_*() functions to make cleanup paths simpler. Signed-off-by:
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Jingoo Han authored
Use devm_*() functions to make cleanup paths simpler. Signed-off-by:
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Jingoo Han authored
Use devm_*() functions to make cleanup paths simpler. Signed-off-by:
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Jingoo Han authored
Use devm_*() functions to make cleanup paths simpler. Signed-off-by:
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Jingoo Han authored
Use devm_*() functions to make cleanup paths simpler. Signed-off-by:
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Jingoo Han authored
Use devm_*() functions to make cleanup paths simpler. Signed-off-by:
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