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db37648cd6
linux/mm
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Nick Piggin db37648cd6 [PATCH] mm: non syncing lock_page() 
lock_page needs the caller to have a reference on the page->mapping inode
due to sync_page, ergo set_page_dirty_lock is obviously buggy according to
its comments.

Solve it by introducing a new lock_page_nosync which does not do a sync_page.

akpm: unpleasant solution to an unpleasant problem.  If it goes wrong it could
cause great slowdowns while the lock_page() caller waits for kblockd to
perform the unplug.  And if a filesystem has special sync_page() requirements
(none presently do), permanent hangs are possible.

otoh, set_page_dirty_lock() is usually (always?) called against userspace
pages.  They are always up-to-date, so there shouldn't be any pending read I/O
against these pages.

Signed-off-by: Nick Piggin <npiggin@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-26 08:48:48 -07:00
..
bootmem.c [PATCH] bootmem: miscellaneous coding style fixes 2006-09-26 08:48:45 -07:00
fadvise.c [PATCH] fadvise() make POSIX_FADV_NOREUSE a no-op 2006-08-06 08:57:47 -07:00
filemap_xip.c [PATCH] mark address_space_operations const 2006-06-28 14:59:04 -07:00
filemap.c [PATCH] mm: non syncing lock_page() 2006-09-26 08:48:48 -07:00
filemap.h [PATCH] generic_file_buffered_write(): handle zero-length iovec segments 2006-06-29 10:26:20 -07:00
fremap.c [PATCH] mm: small cleanup of install_page() 2006-09-26 08:48:44 -07:00
highmem.c [PATCH] reduce MAX_NR_ZONES: move HIGHMEM counters into highmem.c/.h 2006-09-26 08:48:46 -07:00
hugetlb.c [PATCH] tightening hugetlb strict accounting 2006-06-23 07:42:48 -07:00
internal.h [PATCH] mm: VM_BUG_ON 2006-09-26 08:48:44 -07:00
Kconfig Merge master.kernel.org:/pub/scm/linux/kernel/git/gregkh/pci-2.6 2006-06-29 10:49:17 -07:00
madvise.c [PATCH] Fix MADV_REMOVE protection checking 2006-04-17 18:22:18 -07:00
Makefile [PATCH] zoned vm counters: create vmstat.c/.h from page_alloc.c/.h 2006-06-30 11:25:34 -07:00
memory_hotplug.c [PATCH] memory hotadd fixes: enhance collision check 2006-08-06 08:57:49 -07:00
memory.c [PATCH] Add kerneldocs for some functions in mm/memory.c 2006-09-26 08:48:47 -07:00
mempolicy.c [PATCH] linearly index zone->node_zonelists[] 2006-09-26 08:48:47 -07:00
mempool.c [PATCH] dm: work around mempool_alloc, bio_alloc_bioset deadlocks 2006-09-01 11:39:09 -07:00
migrate.c [PATCH] Allow migration of mlocked pages 2006-06-25 10:00:55 -07:00
mincore.c [PATCH] freepgt: sys_mincore ignore FIRST_USER_PGD_NR 2005-04-19 13:29:20 -07:00
mlock.c [PATCH] move capable() to capability.h 2006-01-11 18:42:13 -08:00
mmap.c [PATCH] mm: tracking shared dirty pages 2006-09-26 08:48:44 -07:00
mmzone.c [PATCH] mm/mmzone.c: EXPORT_UNUSED_SYMBOL 2006-07-10 13:24:17 -07:00
mprotect.c [PATCH] mm: optimize the new mprotect() code a bit 2006-09-26 08:48:44 -07:00
mremap.c [PATCH] lockdep: annotate mm 2006-07-03 15:27:07 -07:00
msync.c [PATCH] mm: msync() cleanup 2006-09-26 08:48:45 -07:00
nommu.c [PATCH] nommu: export two symbols for drivers to use 2006-07-14 21:53:53 -07:00
oom_kill.c [PATCH] out of memory notifier 2006-09-26 08:48:47 -07:00
page_alloc.c [PATCH] linearly index zone->node_zonelists[] 2006-09-26 08:48:47 -07:00
page_io.c [PATCH] Light weight event counters 2006-06-30 11:25:36 -07:00
page-writeback.c [PATCH] mm: non syncing lock_page() 2006-09-26 08:48:48 -07:00
pdflush.c [PATCH] pdflush: handle resume wakeups 2006-06-25 10:01:06 -07:00
prio_tree.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
readahead.c spelling fixes 2006-06-26 18:35:02 +02:00
rmap.c [PATCH] mm: tracking shared dirty pages 2006-09-26 08:48:44 -07:00
shmem.c [PATCH] reduce MAX_NR_ZONES: move HIGHMEM counters into highmem.c/.h 2006-09-26 08:48:46 -07:00
slab.c [PATCH] CPU hotplug compatible alloc_percpu() 2006-09-26 08:48:47 -07:00
slob.c Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00
sparse.c Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00
swap_state.c [PATCH] lockdep: locking init debugging improvement 2006-07-03 15:27:02 -07:00
swap.c [PATCH] mm/: make functions static 2006-09-26 08:48:45 -07:00
swapfile.c [PATCH] swsusp: Fix swap_type_of 2006-08-27 11:01:28 -07:00
thrash.c [PATCH] temporarily disable swap token on memory pressure 2005-11-28 14:42:25 -08:00
tiny-shmem.c [PATCH] devfs: Remove the devfs_fs_kernel.h file from the tree 2006-06-26 12:25:08 -07:00
truncate.c [PATCH] invalidate_complete_page() race fix 2006-09-08 10:22:50 -07:00
util.c [PATCH] slab: optimize constant-size kzalloc calls 2006-03-25 08:22:49 -08:00
vmalloc.c [PATCH] mm/: make functions static 2006-09-26 08:48:45 -07:00
vmscan.c [PATCH] mm: remove_mapping() safeness 2006-09-26 08:48:48 -07:00
vmstat.c [PATCH] reduce MAX_NR_ZONES: remove display of counters for unconfigured zones 2006-09-26 08:48:47 -07:00