- 03 1月, 2009 4 次提交
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由 Sonic Zhang 提交于
Add spin_lock_irqsave() when receive and transfer data. Signed-off-by: NSonic Zhang <sonic.zhang@analog.com> Signed-off-by: NBryan Wu <cooloney@kernel.org> Signed-off-by: NAlan Cox <alan@redhat.com> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Sonic Zhang 提交于
Signed-off-by: NSonic Zhang <sonic.zhang@analog.com> Signed-off-by: NBryan Wu <cooloney@kernel.org> Signed-off-by: NAlan Cox <alan@redhat.com> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Graf Yang 提交于
Bug description: The IRDA receiver may can't receiving any more after processed some signals. To duplicate this issue is put three IRDA devices together, one blackfin, two none blackfin, they will detect each other. Let one none blackfin devices irdaping the blackfin devices, when it stopped print out ping information, it is the time that blackfin stoped receiving, the time is random. The related register bit is OK, the other devices is sending data continuously. But no interrupt come. Fixing: I tried Michael's suggestion that request the UARTx error interrupt, and reset the IRDA when found FE error. This method helps much, but it can't completely avoid stop. Reset the IRDA before every time sending the data is more safe. Signed-off-by: NGraf Yang <graf.yang@analog.com> Signed-off-by: NBryan Wu <cooloney@kernel.org> Signed-off-by: NAlan Cox <alan@redhat.com> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Sonic Zhang 提交于
Signed-off-by: NSonic Zhang <sonic.zhang@analog.com> Signed-off-by: NBryan Wu <cooloney@kernel.org> Signed-off-by: NAlan Cox <alan@redhat.com> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 01 1月, 2009 36 次提交
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git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6由 Linus Torvalds 提交于
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6: (34 commits) nfsd race fixes: jfs nfsd race fixes: reiserfs nfsd race fixes: ext4 nfsd race fixes: ext3 nfsd race fixes: ext2 nfsd/create race fixes, infrastructure filesystem notification: create fs/notify to contain all fs notification fs/block_dev.c: __read_mostly improvement and sb_is_blkdev_sb utilization kill ->dir_notify() filp_cachep can be static in fs/file_table.c fix f_count description in Documentation/filesystems/files.txt make INIT_FS use the __RW_LOCK_UNLOCKED initialization take init_fs to saner place kill vfs_permission pass a struct path * to may_open kill walk_init_root remove incorrect comment in inode_permission expand some comments (d_path / seq_path) correct wrong function name of d_put in kernel document and source comment fix switch_names() breakage in short-to-short case ...
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由 Dave Kleikamp 提交于
jfs version of Al Viro's nfsd race patches Signed-off-by: NDave Kleikamp <shaggy@linux.vnet.ibm.com> Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
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由 Al Viro 提交于
... and the same for reiserfs. The difference here is that we need insert_inode_locked4() to match iget5_locked(). Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
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由 Al Viro 提交于
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
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由 Al Viro 提交于
ext3 analog of the previous patch Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
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由 Al Viro 提交于
* make ext2_new_inode() put the inode into icache in locked state * do not unlock until the inode is fully set up; otherwise nfsd might pick it in half-baked state. * make sure that ext2_new_inode() does *not* lead to two inodes with the same inumber hashed at the same time; otherwise a bogus fhandle coming from nfsd might race with inode creation: nfsd: iget_locked() creates inode nfsd: try to read from disk, block on that. ext2_new_inode(): allocate inode with that inumber ext2_new_inode(): insert it into icache, set it up and dirty ext2_write_inode(): get the relevant part of inode table in cache, set the entry for our inode (and start writing to disk) nfsd: get CPU again, look into inode table, see nice and sane on-disk inode, set the in-core inode from it oops - we have two in-core inodes with the same inumber live in icache, both used for IO. Welcome to fs corruption... Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
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由 Al Viro 提交于
new helpers - insert_inode_locked() and insert_inode_locked4(). Hash new inode, making sure that there's no such inode in icache already. If there is and it does not end up unhashed (as would happen if we have nfsd trying to resolve a bogus fhandle), fail. Otherwise insert our inode into hash and succeed. In either case have i_state set to new+locked; cleanup ends up being simpler with such calling conventions. Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
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由 Eric Paris 提交于
Creating a generic filesystem notification interface, fsnotify, which will be used by inotify, dnotify, and eventually fanotify is really starting to clutter the fs directory. This patch simply moves inotify and dnotify into fs/notify/inotify and fs/notify/dnotify respectively to make both current fs/ and future notification tidier. Signed-off-by: NEric Paris <eparis@redhat.com> Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
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由 Denis ChengRq 提交于
- iget5_locked in bdget really needs blockdev_superblock, instead of bd_mnt, so bd_mnt could be just a local variable; - blockdev_superblock really needs __read_mostly, while local var bd_mnt not; - make use of sb_is_blkdev_sb in bd_forget, instead of direct reference to blockdev_superblock. Signed-off-by: NDenis ChengRq <crquan@gmail.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
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由 Al Viro 提交于
Remove the hopelessly misguided ->dir_notify(). The only instance (cifs) has been broken by design from the very beginning; the objects it creates are never destroyed, keep references to struct file they can outlive, nothing that could possibly evict them exists on close(2) path *and* no locking whatsoever is done to prevent races with close(), should the previous, er, deficiencies someday be dealt with. Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
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由 Eric Dumazet 提交于
Instead of creating the "filp" kmem_cache in vfs_caches_init(), we can do it a litle be later in files_init(), so that filp_cachep is static to fs/file_table.c Acked-by: NPaul E. McKenney <paulmck@linux.vnet.ibm.com> Signed-off-by: NEric Dumazet <dada1@cosmosbay.com> Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
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由 Eric Dumazet 提交于
Documentation/filesystems/files.txt was not updated when f_count became an atomic_long_t. atomic_long_inc_not_zero() is now used instead of atomic_inc_not_zero() Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
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由 Steven Rostedt 提交于
[AV: rediffed on top of unification of init_fs] Initialization of init_fs still uses the deprecated RW_LOCK_UNLOCKED macro. This patch updates it to use the __RW_LOCK_UNLOCKED(lock) macro. Signed-off-by: NSteven Rostedt <srostedt@redhat.com> Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
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由 Al Viro 提交于
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
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由 Christoph Hellwig 提交于
With all the nameidata removal there's no point anymore for this helper. Of the three callers left two will go away with the next lookup series anyway. Also add proper kerneldoc to inode_permission as this is the main permission check routine now. Signed-off-by: NChristoph Hellwig <hch@lst.de> Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
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由 Christoph Hellwig 提交于
No need for the nameidata in may_open - a struct path is enough. Signed-off-by: NChristoph Hellwig <hch@lst.de> Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
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由 Christoph Hellwig 提交于
walk_init_root is a tiny helper that is marked __always_inline, has just one caller and an unused argument. Just merge it into the caller. Signed-off-by: NChristoph Hellwig <hch@lst.de> Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
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由 Christoph Hellwig 提交于
We now pass on all MAY_ flags to the filesystems permission routines, so remove the comment stating the contrary. Signed-off-by: NChristoph Hellwig <hch@lst.de> Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
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由 Arjan van de Ven 提交于
Explain that you really need to use the return value of d_path rather than the buffer you passed into it. Also fix the comment for seq_path(), the function arguments changed recently but the comment hadn't been updated in sync. Signed-off-by: NArjan van de Ven <arjan@linux.intel.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Christoph Hellwig <hch@lst.de> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
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由 Zhaolei 提交于
no function named d_put(), it should be dput(). Impact: fix document and comment, no functionality changed Signed-off-by: NZhao Lei <zhaolei@cn.fuijtsu.com> Signed-off-by: NRandy Dunlap <rdunlap@xenotime.net> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
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由 Al Viro 提交于
We want ->name.len to match the resulting name on *both* source and target Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
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由 Duane Griffin 提交于
Ensure fast symlink targets are NUL-terminated, even if corrupted on-disk. Cc: Sergey S. Kostyliov <rathamahata@php4.ru> Signed-off-by: NDuane Griffin <duaneg@dghda.com> Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
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由 Duane Griffin 提交于
Ensure fast symlink targets are NUL-terminated, even if corrupted on-disk. Cc: Christoph Hellwig <hch@infradead.org> Signed-off-by: NDuane Griffin <duaneg@dghda.com> Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
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由 Duane Griffin 提交于
Ensure fast symlink targets are NUL-terminated, even if corrupted on-disk. Cc: Christoph Hellwig <hch@infradead.org> Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: NDuane Griffin <duaneg@dghda.com> Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
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由 Duane Griffin 提交于
Ensure fast symlink targets are NUL-terminated, even if corrupted on-disk. Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Theodore Ts'o <tytso@mit.edu> Cc: adilger@sun.com Cc: linux-ext4@vger.kernel.org Signed-off-by: NDuane Griffin <duaneg@dghda.com> Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
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由 Duane Griffin 提交于
Ensure fast symlink targets are NUL-terminated, even if corrupted on-disk. Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Stephen Tweedie <sct@redhat.com> Cc: linux-ext4@vger.kernel.org Signed-off-by: NDuane Griffin <duaneg@dghda.com> Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
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由 Duane Griffin 提交于
Ensure fast symlink targets are NUL-terminated, even if corrupted on-disk. Cc: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: NDuane Griffin <duaneg@dghda.com> Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
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由 Duane Griffin 提交于
On-disk data corruption could cause a page link to have its i_size set to PAGE_SIZE (or a multiple thereof) and its contents all non-NUL. NUL-terminate the link name to ensure this doesn't cause further problems for the kernel. Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: NDuane Griffin <duaneg@dghda.com> Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
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由 Duane Griffin 提交于
A number of filesystems were potentially triggering kernel bugs due to corrupted symlink names on disk. This function helps safely terminate the names. Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: NDuane Griffin <duaneg@dghda.com> Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
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由 Duane Griffin 提交于
The result from readlink is being used to index into the link name buffer without checking whether it is a valid length. If readlink returns an error this will fault or cause memory corruption. Cc: Tyler Hicks <tyhicks@linux.vnet.ibm.com> Cc: Dustin Kirkland <kirkland@canonical.com> Cc: ecryptfs-devel@lists.launchpad.net Signed-off-by: NDuane Griffin <duaneg@dghda.com> Acked-by: NMichael Halcrow <mhalcrow@us.ibm.com> Acked-by: NTyler Hicks <tyhicks@linux.vnet.ibm.com> Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
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由 Julia Lawall 提交于
The extra semicolon serves no purpose. Signed-off-by: NJulia Lawall <julia@diku.dk> Reviewed-by: NRichard Genoud <richard.genoud@gmail.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Christoph Hellwig <hch@lst.de> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
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由 Jan Engelhardt 提交于
include/linux/fs.h contains externs for a bunch of variables. That obviously belongs under ifdef __KERNEL__. Signed-off-by: NJan Engelhardt <jengelh@medozas.de> Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
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由 Nick Piggin 提交于
struct dentry is one of the most critical structures in the kernel. So it's sad to see it going neglected. With CONFIG_PROFILING turned on (which is probably the common case at least for distros and kernel developers), sizeof(struct dcache) == 208 here (64-bit). This gives 19 objects per slab. I packed d_mounted into a hole, and took another 4 bytes off the inline name length to take the padding out from the end of the structure. This shinks it to 200 bytes. I could have gone the other way and increased the length to 40, but I'm aiming for a magic number, read on... I then got rid of the d_cookie pointer. This shrinks it to 192 bytes. Rant: why was this ever a good idea? The cookie system should increase its hash size or use a tree or something if lookups are a problem. Also the "fast dcookie lookups" in oprofile should be moved into the dcookie code -- how can oprofile possibly care about the dcookie_mutex? It gets dropped after get_dcookie() returns so it can't be providing any sort of protection. At 192 bytes, 21 objects fit into a 4K page, saving about 3MB on my system with ~140 000 entries allocated. 192 is also a multiple of 64, so we get nice cacheline alignment on 64 and 32 byte line systems -- any given dentry will now require 3 cachelines to touch all fields wheras previously it would require 4. I know the inline name size was chosen quite carefully, however with the reduction in cacheline footprint, it should actually be just about as fast to do a name lookup for a 36 character name as it was before the patch (and faster for other sizes). The memory footprint savings for names which are <= 32 or > 36 bytes long should more than make up for the memory cost for 33-36 byte names. Performance is a feature... Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
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由 Richard Kennedy 提交于
Reorder struct inotify_device to remove 8 bytes of padding on 64bit builds, reducing size to 128 bytes . Therefore allocating from a smaller slab & using one fewer cachelines. Signed-off-by: NRichard Kennedy <richard@rsk.demon.co.uk> ---- Hi, patch against 2.6.28-rc7. built & tested on AMDX2 desktop. I've not been able to send this to the listed inotify maintainers, I just get mail failures. So I guessed filesystem was the best home for it, hope that's ok. regards Richard Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
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由 Kentaro Takeda 提交于
Add new LSM hooks for path-based checks. Call them on directory-modifying operations at the points where we still know the vfsmount involved. Signed-off-by: NKentaro Takeda <takedakn@nttdata.co.jp> Signed-off-by: NTetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Signed-off-by: NToshiharu Harada <haradats@nttdata.co.jp> Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
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由 Linus Torvalds 提交于
Merge branch 'irq-fixes-for-linus-4' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'irq-fixes-for-linus-4' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: sparseirq: move __weak symbols into separate compilation unit sparseirq: work around __weak alias bug sparseirq: fix hang with !SPARSE_IRQ sparseirq: set lock_class for legacy irq when sparse_irq is selected sparseirq: work around compiler optimizing away __weak functions sparseirq: fix desc->lock init sparseirq: do not printk when migrating IRQ descriptors sparseirq: remove duplicated arch_early_irq_init() irq: simplify for_each_irq_desc() usage proc: remove ifdef CONFIG_SPARSE_IRQ from stat.c irq: for_each_irq_desc() move to irqnr.h hrtimer: remove #include <linux/irq.h>
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