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2008-04-22fs: use loff_t type instead of long longDavid Sterba1-3/+3
Use offset type consistently. Signed-off-by: David Sterba <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2008-02-08remove the unused exports of sys_open/sys_readArjan van de Ven1-1/+0
These exports (which aren't used and which are in fact dangerous to use because they pretty much form a security hole to use) have been marked _UNUSED since 2.6.24 with removal in 2.6.25. This patch is their final departure from the Linux kernel tree. Signed-off-by: Arjan van de Ven <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2008-01-28ext4: export iov_shorten from kernel for ext4's useEric Sandeen1-0/+1
Export iov_shorten() from kernel so that ext4 can truncate too-large writes to bitmapped files. Signed-off-by: Eric Sandeen <[email protected]>
2008-01-25security: call security_file_permission from rw_verify_areaJames Morris1-39/+24
All instances of rw_verify_area() are followed by a call to security_file_permission(), so just call the latter from the former. Acked-by: Eric Paris <[email protected]> Signed-off-by: James Morris <[email protected]>
2007-11-14mark sys_open/sys_read exports unusedArjan van de Ven1-1/+1
sys_open / sys_read were used in the early 1.2 days to load firmware from disk inside drivers. Since 2.0 or so this was deprecated behavior, but several drivers still were using this. Since a few years we have a request_firmware() API that implements this in a nice, consistent way. Only some old ISA sound drivers (pre-ALSA) still straggled along for some time.... however with commit c2b1239a9f22f19c53543b460b24507d0e21ea0c the last user is now gone. This is a good thing, since using sys_open / sys_read etc for firmware is a very buggy to dangerous thing to do; these operations put an fd in the process file descriptor table.... which then can be tampered with from other threads for example. For those who don't want the firmware loader, filp_open()/vfs_read are the better APIs to use, without this security issue. The patch below marks sys_open and sys_read unused now that they're really not used anymore, and for deletion in the 2.6.25 timeframe. Signed-off-by: Arjan van de Ven <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2007-10-09Cleanup macros for distinguishing mandatory locksPavel Emelyanov1-1/+1
The combination of S_ISGID bit set and S_IXGRP bit unset is used to mark the inode as "mandatory lockable" and there's a macro for this check called MANDATORY_LOCK(inode). However, fs/locks.c and some filesystems still perform the explicit i_mode checking. Besides, Andrew pointed out, that this macro is buggy itself, as it dereferences the inode arg twice. Convert this macro into static inline function and switch its users to it, making the code shorter and more readable. The __mandatory_lock() helper is to be used in places where the IS_MANDLOCK() for superblock is already known to be true. Signed-off-by: Pavel Emelyanov <[email protected]> Cc: Trond Myklebust <[email protected]> Cc: "J. Bruce Fields" <[email protected]> Cc: David Howells <[email protected]> Cc: Eric Van Hensbergen <[email protected]> Cc: Ron Minnich <[email protected]> Cc: Latchesar Ionkov <[email protected]> Cc: Steven Whitehouse <[email protected]> Signed-off-by: Andrew Morton <[email protected]>
2007-07-10Remove remnants of sendfile()Jens Axboe1-15/+11
There are now zero users of .sendfile() in the kernel, so kill it from the file_operations structure and in do_sendfile(). Signed-off-by: Jens Axboe <[email protected]>
2007-07-10splice: divorce the splice structure/function definitions from the pipe headerJens Axboe1-1/+1
We need to move even more stuff into the header so that folks can use the splice_to_pipe() implementation instead of open-coding a lot of pipe knowledge (see relay implementation), so move to our own header file finally. Signed-off-by: Jens Axboe <[email protected]>
2007-07-10sys_sendfile: switch to using ->splice_read, if availableJens Axboe1-4/+20
This patch makes sendfile prefer to use ->splice_read(), if it's available in the file_operations structure. Signed-off-by: Jens Axboe <[email protected]>
2007-05-08use use SEEK_MAX to validate user lseek argumentsChris Snook1-2/+2
Add SEEK_MAX and use it to validate lseek arguments from userspace. Signed-off-by: Chris Snook <[email protected]> Acked-by: David Howells <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2007-05-08use symbolic constants in generic lseek codeChris Snook1-6/+6
Convert magic numbers to SEEK_* values from fs.h Signed-off-by: Chris Snook <[email protected]> Acked-by: David Howells <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2007-02-12[PATCH] FS: speed up rw_verify_area()Eric Dumazet1-1/+1
oprofile hunting showed a stall in rw_verify_area(), because of triple indirection and potential cache misses. (file->f_path.dentry->d_inode->i_flock) By moving initialization of 'struct inode' pointer before the pos/count sanity tests, we allow the compiler and processor to perform two loads by anticipation, reducing stall, without prefetch() hints. Even x86 arch has enough registers to not use temporary variables and not increase text size. I validated this patch running a bench and studied oprofile changes, and absolute perf of the test program. Results of my epoll_pipe_bench (source available on request) on a Pentium-M 1.6 GHz machine Before : # ./epoll_pipe_bench -l 30 -t 20 Avg: 436089 evts/sec read_count=8843037 write_count=8843040 21.218390 samples per call (best value out of 10 runs) After : # ./epoll_pipe_bench -l 30 -t 20 Avg: 470980 evts/sec read_count=9549871 write_count=9549894 21.216694 samples per call (best value out of 10 runs) oprofile CPU_CLK_UNHALTED events gave a reduction from 5.3401 % to 2.5851 % for the rw_verify_area() function. Signed-off-by: Eric Dumazet <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2007-02-11[PATCH] ifdef ->rchar, ->wchar, ->syscr, ->syscw from task_structAlexey Dobriyan1-12/+12
They are fat: 4x8 bytes in task_struct. They are uncoditionally updated in every fork, read, write and sendfile. They are used only if you have some "extended acct fields feature". And please, please, please, read(2) knows about bytes, not characters, why it is called "rchar"? Signed-off-by: Alexey Dobriyan <[email protected]> Cc: Jay Lan <[email protected]> Cc: Balbir Singh <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2006-12-13[PATCH] one more EXPORT_UNUSED_SYMBOL removalAdrian Bunk1-2/+0
Signed-off-by: Adrian Bunk <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2006-12-08[PATCH] VFS: change struct file to use struct pathJosef "Jeff" Sipek1-10/+10
This patch changes struct file to use struct path instead of having independent pointers to struct dentry and struct vfsmount, and converts all users of f_{dentry,vfsmnt} in fs/ to use f_path.{dentry,mnt}. Additionally, it adds two #define's to make the transition easier for users of the f_dentry and f_vfsmnt. Signed-off-by: Josef "Jeff" Sipek <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2006-10-01[PATCH] Add vector AIO supportBadari Pulavarty1-54/+75
This work is initially done by Zach Brown to add support for vectored aio. These are the core changes for AIO to support IOCB_CMD_PREADV/IOCB_CMD_PWRITEV. [[email protected]: huge build fix] Signed-off-by: Zach Brown <[email protected]> Signed-off-by: Christoph Hellwig <[email protected]> Signed-off-by: Badari Pulavarty <[email protected]> Acked-by: Benjamin LaHaise <[email protected]> Acked-by: James Morris <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2006-10-01[PATCH] Streamline generic_file_* interfaces and filemap cleanupsBadari Pulavarty1-1/+2
This patch cleans up generic_file_*_read/write() interfaces. Christoph Hellwig gave me the idea for this clean ups. In a nutshell, all filesystems should set .aio_read/.aio_write methods and use do_sync_read/ do_sync_write() as their .read/.write methods. This allows us to cleanup all variants of generic_file_* routines. Final available interfaces: generic_file_aio_read() - read handler generic_file_aio_write() - write handler generic_file_aio_write_nolock() - no lock write handler __generic_file_aio_write_nolock() - internal worker routine Signed-off-by: Badari Pulavarty <[email protected]> Signed-off-by: Christoph Hellwig <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2006-10-01[PATCH] Remove readv/writev methods and use aio_read/aio_write insteadBadari Pulavarty1-34/+67
This patch removes readv() and writev() methods and replaces them with aio_read()/aio_write() methods. Signed-off-by: Badari Pulavarty <[email protected]> Signed-off-by: Christoph Hellwig <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2006-10-01[PATCH] Vectorize aio_read/aio_write fileop methodsBadari Pulavarty1-4/+16
This patch vectorizes aio_read() and aio_write() methods to prepare for collapsing all aio & vectored operations into one interface - which is aio_read()/aio_write(). Signed-off-by: Badari Pulavarty <[email protected]> Signed-off-by: Christoph Hellwig <[email protected]> Cc: Michael Holzheu <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2006-07-10[PATCH] fs/read_write.c: EXPORT_UNUSED_SYMBOLAdrian Bunk1-1/+1
This patch marks an unused export as EXPORT_UNUSED_SYMBOL. Signed-off-by: Adrian Bunk <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2006-04-11[PATCH] splice: unlikely() optimizationsJens Axboe1-1/+1
Also corrects a few comments. Patch mainly from Ingo, changes by me. Signed-off-by: Ingo Molnar <[email protected]> Signed-off-by: Jens Axboe <[email protected]>
2006-03-28[PATCH] Make most file operations structs in fs/ constArjan van de Ven1-1/+1
This is a conversion to make the various file_operations structs in fs/ const. Basically a regexp job, with a few manual fixups The goal is both to increase correctness (harder to accidentally write to shared datastructures) and reducing the false sharing of cachelines with things that get dirty in .data (while .rodata is nicely read only and thus cache clean) Signed-off-by: Arjan van de Ven <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2006-03-25[PATCH] remove needless check in fs/read_write.cCarsten Otte1-1/+1
nr_segs is unsigned long and thus cannot be negative. We checked against 0 few lines before. Signed-off-by: Carsten Otte <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2006-01-09[PATCH] mutex subsystem, semaphore to mutex: VFS, ->i_semJes Sorensen1-2/+2
This patch converts the inode semaphore to a mutex. I have tested it on XFS and compiled as much as one can consider on an ia64. Anyway your luck with it might be different. Modified-by: Ingo Molnar <[email protected]> (finished the conversion) Signed-off-by: Jes Sorensen <[email protected]> Signed-off-by: Ingo Molnar <[email protected]>
2006-01-04Relax the rw_verify_area() error checking.Linus Torvalds1-9/+25
In particular, allow over-large read- or write-requests to be downgraded to a more reasonable range, rather than considering them outright errors. We want to protect lower layers from (the sadly all too common) overflow conditions, but prefer to do so by chopping the requests up, rather than just refusing them outright. Cc: Peter Anvin <[email protected]> Cc: Ulrich Drepper <[email protected]> Cc: Andi Kleen <[email protected]> Cc: Al Viro <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2005-09-29[PATCH] readv/writev syscalls are not checked by lsmKostik Belousov1-0/+3
it seems that readv(2)/writev(2) syscalls do not call file_permission callback. Looks like this is overlook. I have filled the issue into redhat bugzilla as https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=169433 and got the recommendation to post this on lsm mailing list. The following trivial patch solves the problem. Signed-off-by: Kostik Belousov <[email protected]> Signed-off-by: Chris Wright <[email protected]>
2005-09-07[PATCH] remove file.f_maxcountEric Dumazet1-1/+1
struct file cleanup: f_maxcount has an unique value (INT_MAX). Just use the hard-wired value. Signed-off-by: Eric Dumazet <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2005-07-12[PATCH] inotifyRobert Love1-6/+9
inotify is intended to correct the deficiencies of dnotify, particularly its inability to scale and its terrible user interface: * dnotify requires the opening of one fd per each directory that you intend to watch. This quickly results in too many open files and pins removable media, preventing unmount. * dnotify is directory-based. You only learn about changes to directories. Sure, a change to a file in a directory affects the directory, but you are then forced to keep a cache of stat structures. * dnotify's interface to user-space is awful. Signals? inotify provides a more usable, simple, powerful solution to file change notification: * inotify's interface is a system call that returns a fd, not SIGIO. You get a single fd, which is select()-able. * inotify has an event that says "the filesystem that the item you were watching is on was unmounted." * inotify can watch directories or files. Inotify is currently used by Beagle (a desktop search infrastructure), Gamin (a FAM replacement), and other projects. See Documentation/filesystems/inotify.txt. Signed-off-by: Robert Love <[email protected]> Cc: John McCutchan <[email protected]> Cc: Christoph Hellwig <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2005-06-23[PATCH] aio: fix do_sync_(read|write) to properly handle aio retriesBenjamin LaHaise1-2/+18
When do_sync_(read|write) encounters an aio method that makes use of the retry mechanism, they fail to correctly retry the operation. This fixes that by adding the appropriate sleep and retry mechanism. Signed-off-by: Benjamin LaHaise <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2005-04-16[PATCH] undo do_readv_writev() behavior changeDave Hansen1-2/+2
Bugme bug 4326: http://bugme.osdl.org/show_bug.cgi?id=4326 reports: executing the systemcall readv with Bad argument ->len == -1) it gives out error EFAULT instead of EINVAL Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2005-04-16Linux-2.6.12-rc2Linus Torvalds1-0/+730
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
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