- 03 Feb, 2006 40 commits
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Jeff Moyer authored
Currently, if you open a file O_DIRECT, truncate it to a size that is not a multiple of the disk block size, and then try to read the last block in the file, the read will return 0. The problem is in do_direct_IO, here: /* Handle holes */ if (!buffer_mapped(map_bh)) { char *kaddr; ... if (dio->block_in_file >= i_size_read(dio->inode)>>blkbits) { /* We hit eof */ page_cache_release(page); goto out; } We shift off any remaining bytes in the final block of the I/O, resulting in a 0-sized read. I've attached a patch that fixes this. I'm not happy about how ugly the math is getting, so suggestions are more than welcome. I've tested this with a simple program that performs the steps outlined for reproducing the problem above. Without the patch, we get a 0-sized result from read. With the patch, we get the correct return value from the short read. Signed-off-by:Jeff Moyer <jmoyer@redhat.com> Cc: Badari Pulavarty <pbadari@us.ibm.com> Cc: Suparna Bhattacharya <suparna@in.ibm.com> Cc: Mingming Cao <cmm@us.ibm.com> Cc: Joel Becker <Joel.Becker@oracle.com> Cc: "Chen, Kenneth W" <kenneth.w.chen@intel.com> Signed-off-by:
Andrew Morton <akpm@osdl.org> Signed-off-by:
Linus Torvalds <torvalds@osdl.org>
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Carsten Otte authored
In case we have CONFIG_FS_XIP, ext2_show_options shows "xip" if EXT2_MOUNT_XIP mount flag is set. Signed-off-by:
Carsten Otte <cotte@de.ibm.com> Signed-off-by:
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schwab@suse.de authored
Don't compute and display the per-irq sums on ia64 either, too much overhead for mostly useless figures. Cc: Olaf Hering <olh@suse.de> Acked-by:
"Luck, Tony" <tony.luck@intel.com> Signed-off-by:
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Randy Dunlap authored
drivers/edac/e752x_edac.c:1042:7: warning: obsolete struct initializer, use C99 syntax Signed-off-by:
Randy Dunlap <rdunlap@xenotime.net> Signed-off-by:
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Randy Dunlap authored
kernel/cpuset.c:644:38: warning: non-ANSI function declaration of function 'cpuset_update_task_memory_state' Signed-off-by:
Paul Jackson <pj@sgi.com> Signed-off-by:
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Arnaud Giersch authored
Remove dead address for David Campbell in MAINTAINERS. Signed-off-by:
Arnaud Giersch <arnaud.giersch@free.fr> Signed-off-by:
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Arnaud Giersch authored
Fix documentation to actually match the code. Signed-off-by:
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George Anzinger authored
- In case of a negative nsec value the result of the division must be normalized. - Remove inline from an exported function. Signed-off-by:
George Anzinger <george@wildturkeyranch.net> Signed-off-by:
Thomas Gleixner <tglx@linutronix.de> Signed-off-by:
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Latchesar Ionkov authored
When v9fs_mux_rpc sends a 9P message, it may be put in the queue of unsent request. If the user process receives a signal, v9fs_mux_rpc sets the request error to ERREQFLUSH and assigns NULL to request's send message. If the message was still in the unsent queue, v9fs_write_work would produce an oops while processing it. The patch makes sure that requests that are being flushed are moved to the pending requests queue safely. If a request is being flushed, don't remove it from the list of pending requests even if it receives a reply before the flush is acknoledged. The request will be removed during from the Rflush handler (v9fs_mux_flush_cb). Signed-off-by:
Latchesar Ionkov <lucho@ionkov.net> Cc: Eric Van Hensbergen <ericvh@ericvh.myip.org> Signed-off-by:
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Latchesar Ionkov authored
v9fs_put_str used to store pointer to the source string, instead of the cbuf copy. This patch corrects it. Signed-off-by:
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Latchesar Ionkov authored
Two symlink fixes, v9fs_readlink didn't copy the last character of the symlink name, v9fs_vfs_follow_link incorrectly called strlen of newly allocated buffer instead of PATH_MAX. Signed-off-by:
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Arnaud Giersch authored
Add support for the built-in parallel port on SGI O2 (a.k.a. IP32). Define a new configuration option: PARPORT_IP32. The module is named parport_ip32. Hardware support for SPP, EPP and ECP modes along with DMA support when available are currently implemented. Signed-off-by:
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Felix Oxley authored
Signed-off-by:
Felix Oxley <lkml@oxley.org> Signed-off-by:
Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by:
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Domen Puncer authored
A few lines above the patch we have: char *srec; srec = kmalloc(SCIOC_SRECSIZE, GFP_KERNEL); sizeof pointer is probably not meant here. Signed-off-by:
Domen Puncer <domen@coderock.org> Signed-off-by:
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Tobias Klauser authored
Signed-off-by:
Tobias Klauser <tklauser@nuerscht.ch> Signed-off-by:
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Andreas Gruenbacher authored
There is a code path that passed size to ext2_xattr_set (ext3_xattr_set_handle) before initializing it. The callees don't use the value in that case, but gcc cannot tell. Always initialize size to get rid of the warnings. Signed-off-by:
Andreas Gruenbacher <agruen@suse.de> Signed-off-by:
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Andreas Schwab authored
Fix this warning: fs/ufs/super.c: In function âufs_fill_superâ: fs/ufs/super.c:858: warning: case label value exceeds maximum value for type which happens because __s8 != char. These macros are used for struct ufs_super_block.fs_clean which is declared as __s8. Signed-off-by:
Andreas Schwab <schwab@suse.de> Signed-off-by:
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Dave Jones authored
The AMD76x chipsets aren't used in 64-bit, so don't offer the driver to the user. Signed-off-by:
Dave Jones <davej@redhat.com> Acked-by:
Alan Cox <alan@redhat.com> Signed-off-by:
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Tong Li authored
Fix the problem in kernel 2.6.15.1 (and early versions) that OProfile on x86_64 does not correctly collect the stack traces for kernel functions. The original code in valid_kernel_stack() in arch/i386/oprofile/backtrace.c assumes that the frame pointer (headaddr) should be greater than stack (i.e., regs). This assumption is wrong for x86_64 because NMIs in x86_64 use a seperate stack different from the kernel stack. Therefore, the variable stack now points to some location on the NMI stack, which turns out to be at a higher address than the frame pointer (headaddr) on the kernel stack. The correct comparison here should be between headaddr and regs->rsp for x86_64. Signed-off-by:
Tong Li <tong.n.li@intel.com> Cc: John Levon <levon@movementarian.org> Cc: Philippe Elie <phil.el@wanadoo.fr> Signed-off-by:
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Alan Cox authored
Breakage reported by Adrian Bunk Untested (no hardware) Signed-off-by:
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Alan Cox authored
INKERNEL is always defined HOST is never defined therefore RTA is also never defined Strip the relevant garbage out of the headers on this basis. Signed-off-by:
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Marcelo Tosatti authored
Shrinks "struct dentry" from 128 bytes to 124 on x86, allowing 31 objects per slab instead of 30. Cc: John Levon <levon@movementarian.org> Cc: Philippe Elie <phil.el@wanadoo.fr> Signed-off-by:
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Evgeniy Dushistov authored
This fixes the code like this: bh = sb_find_get_block (sb, tmp + j); if ((bh && DATA_BUFFER_USED(bh)) || tmp != fs32_to_cpu(sb, *p)) { retry = 1; brelse (bh); goto next1; } bforget (bh); sb_find_get_block() ordinarily returns a buffer_head with b_count>=2, and this code assume that in case if "b_count>1" buffer is used, so this caused infinite loop. (akpm: that is-the-buffer-busy code is incomprehensible. Good riddance. Use of block_truncate_page() seems sane). Signed-off-by:Evgeniy Dushistov <dushistov@mail.ru> Signed-off-by:
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Evgeniy Dushistov authored
"rm" command, on file system with "ufs1" type cause system hang up. This is, in fact, not so bad as it seems to be, because of after that in "kernel control path" there are 3-4 places which may cause "oops". So the first patch fix oopses, and the second patch fix "kernel hang up". "oops" appears because of reading of group's summary info partly wrong, and access to not first group's summary info cause "oops". Signed-off-by:
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Andrew Morton authored
drivers/char/sx.c: In function `sx_set_real_termios': drivers/char/sx.c:934: warning: long unsigned int format, different type arg (arg 2) drivers/char/sx.c:961: warning: long unsigned int format, different type arg (arg 2) drivers/char/sx.c:976: warning: long unsigned int format, different type arg (arg 2) Signed-off-by:
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Andrew Morton authored
fs/quota_v2.c: In function `v2_check_quota_file': fs/quota_v2.c:39: warning: int format, different type arg (arg 2) fs/quota_v2.c:39: warning: int format, different type arg (arg 3) Cc: Jan Kara <jack@ucw.cz> Signed-off-by:
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Andrew Morton authored
drivers/parport/parport_serial.c: In function `parport_register': drivers/parport/parport_serial.c:334: warning: unsigned int format, different type arg (arg 3) Signed-off-by:
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Vitaly Fertman authored
Signed-off-by:
Hans Reiser <reiser@namesys.com> Signed-off-by:
Vitaly Fertman <vitaly@namesys.com> Cc: <stable@kernel.org> Signed-off-by:
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Adrian Bunk authored
Do not allow people to create configurations with CONFIG_BROKEN=y. The sole reason for CONFIG_BROKEN=y would be if you are working on fixing a broken driver, but in this case editing the Kconfig file is trivial. Never ever should a user enable CONFIG_BROKEN. Signed-off-by:
Adrian Bunk <bunk@stusta.de> Signed-off-by:
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Randy Dunlap authored
Fix printk format warning: drivers/parport/probe.c:205: warning: format '%d' expects type 'int', but argument 3 has type 'size_t' Signed-off-by:
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Alan Cox authored
Signed-off-by:
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Andrew Morton authored
drivers/char/sx.c: In function `sx_set_real_termios': drivers/char/sx.c:934: warning: int format, long unsigned int arg (arg 2) drivers/char/sx.c:961: warning: unsigned int format, tcflag_t arg (arg 2) drivers/char/sx.c:976: warning: unsigned int format, tcflag_t arg (arg 2) Signed-off-by:
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Steffen Klassert authored
Count the total number of packets with collisions during transmission in vp->stats.collisions. Signed-off-by:
Steffen Klassert <klassert@mathematik.tu-chemnitz.de> Signed-off-by:
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Zach Brown authored
I noticed that list.h init functions were evaluating macro arguments multiple times and thought it might be nice to protect the unsuspecting caller. Converting the macros to inline functions seems to reduce code size, too. A i386 defconfig build with gcc 3.3.3 from fc4: text data bss dec hex filename 3573148 565664 188828 4327640 4208d8 vmlinux.before 3572177 565664 188828 4326669 42050d vmlinux add/remove: 0/0 grow/shrink: 11/144 up/down: 88/-1016 (-928) There was no difference in checkstack output. Signed-off-by:
Zach Brown <zach.brown@oracle.com> Signed-off-by:
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Alexey Dobriyan authored
"[PATCH] m68knommu: fix find_next_zero_bit in bitops.h" fixed a typo in m68knommu implementation of find_next_zero_bit(). grep(1) shows that cris, frv, h8300, v850 are also affected. Signed-off-by:
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Keith Owens authored
When one module exports a function symbol and another module uses that symbol then kallsyms shows the symbol twice. Once from the consumer with a type of 'U' and once from the provider with a type of 't' or 'T'. On most architectures, both entries have the same address so it does not matter which one is returned by kallsyms_lookup_name(). But on architectures with function descriptors, the 'U' entry points to the descriptor, not to the code body, which is not what we want. IA64 # grep -w qla2x00_remove_one /proc/kallsyms a000000208c25ef8 U qla2x00_remove_one [qla2300] <= descriptor a000000208bf44c0 t qla2x00_remove_one [qla2xxx] <= function body Tell kallsyms_lookup_name() to ignore type U entries in modules. Signed-off-by:
Keith Owens <kaos@sgi.com> Signed-off-by:
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Cornelia Huck authored
Fix broken to_channelpath macro (fortunately worked in all current cases...). Signed-off-by:
Cornelia Huck <cohuck@de.ibm.com> Signed-off-by:
Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by:
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Heiko Carstens authored
Patch 9ad11ab4 changes the type of the first argument of some compat syscalls from int to unsigned int. Add these changes to the s390 compat wrapper as well. Signed-off-by:
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Heiko Carstens authored
Compile fix: add missing __raw_read* and __raw_write* defines to include/asm-s390/io.h. These are mandatory since patch c27a0d75 was merged. Signed-off-by:
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Jan Glauber authored
Avoid visibility of kernel internal interface to user space. Signed-off-by:
Jan Glauber <jan.glauber@de.ibm.com> Signed-off-by:
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