- 03 Feb, 2008 1 commit
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J. Bruce Fields authored
For such a short function (with such a long comment), posix_locks_deadlock() seems to cause a lot of confusion. Attempt to make it a bit clearer: - Remove the initial posix_same_owner() check, which can never pass (since this is only called in the case that block_fl and caller_fl conflict) - Use an explicit loop (and a helper function) instead of a goto. - Rewrite the comment, attempting a clearer explanation, and removing some uninteresting historical detail. Signed-off-by:J. Bruce Fields <bfields@citi.umich.edu>
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- 02 Feb, 2008 39 commits
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git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6Linus Torvalds authored
* git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6: (95 commits) ide-tape: remove idetape_config_t typedef ide-tape: remove mtio.h related comments ide-tape: make function name more accurate ide-tape: remove unused sense packet commands. ide-tape: use generic byteorder macros ide-tape: remove EXPERIMENTAL driver status ide-tape: use generic scsi commands ide-tape: remove struct idetape_block_size_page_t ide-tape: remove structs os_partition_t, os_dat_entry_t, os_dat_t ide-tape: remove struct idetape_parameter_block_descriptor_t ide-tape: remove struct idetape_medium_partition_page_t ide-tape: remove struct idetape_data_compression_page_t ide-tape: remove struct idetape_inquiry_result_t ide-tape: remove struct idetape_capabilities_page_t ide-tape: remove IDETAPE_DEBUG_BUGS ide-tape: remove IDETAPE_DEBUG_INFO ide-tape: dump gcw fields on error in idetape_identify_device() ide-tape: remove struct idetape_mode_parameter_header_t ide-tape: remove struct idetape_request_sense_result_t ide-tape: remove dead code ...
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Nick Piggin authored
Frederik Himpe reported an unkillable and un-straceable pan process. Zero length iovecs can go into an infinite loop in writev, because the iovec iterator does not always advance over them. The sequence required to trigger this is not trivial. I think it requires that a zero-length iovec be followed by a non-zero-length iovec which causes a pagefault in the atomic usercopy. This causes the writev code to drop back into single-segment copy mode, which then tries to copy the 0 bytes of the zero-length iovec; a zero length copy looks like a failure though, so it loops. Put a test into iov_iter_advance to catch zero-length iovecs. We could just put the test in the fallback path, but I feel it is more robust to skip over zero-length iovecs throughout the code (iovec iterator may be used in filesystems too, so it should be robust). Signed-off-by:
Nick Piggin <npiggin@suse.de> Signed-off-by:
Ingo Molnar <mingo@elte.hu> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6Linus Torvalds authored
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6: ieee1394: sbp2: fix bogus s/g access change
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Borislav Petkov authored
Since this is used only in idetape_blkdev_ioctl(), remove the typedef and make the struct function-local. Bart: - s/sizeof(struct idetape_config)/sizeof(config)/ Signed-off-by:
Borislav Petkov <bbpetkov@yahoo.de> Signed-off-by:
Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
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Borislav Petkov authored
Those are already in mtio.h. Bart: - undo 'unsigned int/unsigned long' -> 'uint/ulong' conversion Signed-off-by:
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Borislav Petkov authored
idetape_active_next_stage() was rather ambiguous wrt its purpose. Make that more explicit and remove superfluous comment. Signed-off-by:
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Borislav Petkov authored
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Borislav Petkov authored
This is not a network driver. Signed-off-by:
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Borislav Petkov authored
ide-tape has depended on EXPERIMENTAL for ages. Change that since the driver is being only maintained now. Signed-off-by:
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Borislav Petkov authored
Also, remove those which weren't used. Signed-off-by:
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Borislav Petkov authored
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Borislav Petkov authored
They seem just to sit there completely unused. Signed-off-by:
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Borislav Petkov authored
Also, shorten function name idetape_get_blocksize_from_block_descriptor() and move its definition up thereby getting rid of its forward declaration. Signed-off-by:
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Borislav Petkov authored
There should be no functional changes resulting from this patch. Signed-off-by:
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Borislav Petkov authored
There should be no functional changes resulting from this patch. Signed-off-by:
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Borislav Petkov authored
There should be no functional changes resulting from this patch. Signed-off-by:
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Borislav Petkov authored
All those 2-byte values denoting the different capabilities are being written to the local copy of the caps buffer without being converted to big endian for simplicity of usage and shorter code later. Also, we add some comments stating which are the fields of the caps page in question in order to alleviate the cryptic pointer casting exercises as in e.g. idetape_get_mode_sense_results(). There should be no functional changes resulting from this patch. Bart: - remove two needless "!!" Signed-off-by:
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Borislav Petkov authored
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Borislav Petkov authored
The device capabilities are probed for during device initialization so this info is available through proc/ioctl() und it is redundant here. Signed-off-by:
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Bartlomiej Zolnierkiewicz authored
Cc: Borislav Petkov <bbpetkov@yahoo.de> Signed-off-by: -
Borislav Petkov authored
Bart: - remove 'capabilities->speed' chunk - re-add brackets to block_descrp assignment Signed-off-by:
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Borislav Petkov authored
Bart: - remove unnecessary comment change - remove two needless "!!" Signed-off-by:
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Borislav Petkov authored
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Borislav Petkov authored
Also, cleanup whitespace and update comments. Bart: - remove reference to drivers/block/ide.c - move driver documentation to Documentation/ide/ide-tape.txt Signed-off-by:
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Bartlomiej Zolnierkiewicz authored
No reason to use ide_init_hwif_ports() in ide-cs (as a nice side-effect this makes ide-cs work on archs that don't define IDE_ARCH_OBSOLETE_INIT). Signed-off-by: -
Bartlomiej Zolnierkiewicz authored
* Move check_dma_crc() to ide-dma.c and add inline version for CONFIG_BLK_DEV_IDEDMA=n case. * Rename check_dma_crc() to ide_check_dma_crc(). Signed-off-by: -
Bartlomiej Zolnierkiewicz authored
While at it: * Remove needless '!drive->crc_count' check. Acked-by:
Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by:
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Bartlomiej Zolnierkiewicz authored
Acked-by:
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Bartlomiej Zolnierkiewicz authored
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Bartlomiej Zolnierkiewicz authored
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Bartlomiej Zolnierkiewicz authored
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Bartlomiej Zolnierkiewicz authored
SELECT_DRIVE() is called by IDE core code in start_request() before device driver's ->do_request method. In ide-scsi case ->do_request is implemented by idescsi_do_request() which is also the only user of idescsi_issue_pc(). Signed-off-by: -
Bartlomiej Zolnierkiewicz authored
* Use __ide_set_handler() in ide_execute_command(). While at it: * Fix whitespace damage in ide_execute_command(). Acked-by:
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Bartlomiej Zolnierkiewicz authored
* siimage.c: use hwif->sata_scr[SATA_{ERROR,STATUS}_OFFSET] instead of SATA_{ERROR,STATUS}_REG macros. * Remove no longer needed SATA_*_REG macros. While at it: * Remove needless SATA Status register read from sil_sata_reset_poll(). Signed-off-by: -
Bartlomiej Zolnierkiewicz authored
* ->nice0 and ->nice2 ide_drive_t fields are always zero so remove them. * IDE_NICE_0 and IDE_NICE_2 defines from <linux/hdreg.h> are no longer used by any kernel code so cover them with #ifndef/#endif __KERNEL__. Acked-by:
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Bartlomiej Zolnierkiewicz authored
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Bartlomiej Zolnierkiewicz authored
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Bartlomiej Zolnierkiewicz authored
* Cache value read from the Status register in 'stat' variable in do_probe() and enable_nest(), then remove remove needless Status register reads. While at it: * Add proper KERN_* levels to printk() calls. Signed-off-by: -
Bartlomiej Zolnierkiewicz authored
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