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* mm, fs: get rid of PAGE_CACHE_* and page_cache_{get,release} macrosKirill A. Shutemov2016-04-041-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | PAGE_CACHE_{SIZE,SHIFT,MASK,ALIGN} macros were introduced *long* time ago with promise that one day it will be possible to implement page cache with bigger chunks than PAGE_SIZE. This promise never materialized. And unlikely will. We have many places where PAGE_CACHE_SIZE assumed to be equal to PAGE_SIZE. And it's constant source of confusion on whether PAGE_CACHE_* or PAGE_* constant should be used in a particular case, especially on the border between fs and mm. Global switching to PAGE_CACHE_SIZE != PAGE_SIZE would cause to much breakage to be doable. Let's stop pretending that pages in page cache are special. They are not. The changes are pretty straight-forward: - <foo> << (PAGE_CACHE_SHIFT - PAGE_SHIFT) -> <foo>; - <foo> >> (PAGE_CACHE_SHIFT - PAGE_SHIFT) -> <foo>; - PAGE_CACHE_{SIZE,SHIFT,MASK,ALIGN} -> PAGE_{SIZE,SHIFT,MASK,ALIGN}; - page_cache_get() -> get_page(); - page_cache_release() -> put_page(); This patch contains automated changes generated with coccinelle using script below. For some reason, coccinelle doesn't patch header files. I've called spatch for them manually. The only adjustment after coccinelle is revert of changes to PAGE_CAHCE_ALIGN definition: we are going to drop it later. There are few places in the code where coccinelle didn't reach. I'll fix them manually in a separate patch. Comments and documentation also will be addressed with the separate patch. virtual patch @@ expression E; @@ - E << (PAGE_CACHE_SHIFT - PAGE_SHIFT) + E @@ expression E; @@ - E >> (PAGE_CACHE_SHIFT - PAGE_SHIFT) + E @@ @@ - PAGE_CACHE_SHIFT + PAGE_SHIFT @@ @@ - PAGE_CACHE_SIZE + PAGE_SIZE @@ @@ - PAGE_CACHE_MASK + PAGE_MASK @@ expression E; @@ - PAGE_CACHE_ALIGN(E) + PAGE_ALIGN(E) @@ expression E; @@ - page_cache_get(E) + get_page(E) @@ expression E; @@ - page_cache_release(E) + put_page(E) Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Acked-by: Michal Hocko <mhocko@suse.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* orangefs: saner calling conventions for getting a slotAl Viro2016-03-251-18/+6
| | | | | | | | just have it return the slot number or -E... - the caller checks the sign anyway Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Mike Marshall <hubcap@omnibond.com>
* orangefs_copy_{to,from}_bufmap(): don't pass bufmap pointerAl Viro2016-03-251-7/+6
| | | | | | | it's always __orangefs_bufmap Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Mike Marshall <hubcap@omnibond.com>
* orangefs_readdir_index_put(): get rid of bufmap argumentAl Viro2016-02-191-1/+1
| | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Mike Marshall <hubcap@omnibond.com>
* orangefs: bufmap rewriteAl Viro2016-02-191-175/+166
| | | | | | | | | | | | | | | | | | | | | new waiting-for-slot logics: * make request for slot wait for bufmap to be set up if it comes before it's installed *OR* while it's running down * make closing control device wait for all slots to be freed * waiting itself rewritten to (open-coded) analogues of wait_event_... primitives - we would need wait_event_locked() and, pardon an obscenely long name, wait_event_interruptible_exclusive_timeout_locked(). * we never wait for more than slot_timeout_secs in total and, if during the wait the daemon goes away, we only allow ORANGEFS_BUFMAP_WAIT_TIMEOUT_SECS for it to come back. * (cosmetical) bitmap is used instead of an array of zeroes and ones * old (and only reached if we are about to corrupt memory) waiting for daemon restart in service_operation() removed. [Martin's fixes folded] Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Mike Marshall <hubcap@omnibond.com>
* orangefs_bufmap_..._query(): don't bother with refcountsAl Viro2016-02-191-8/+8
| | | | | | | ... just hold the spinlock while fetching the field in question. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Mike Marshall <hubcap@omnibond.com>
* get rid of bufmap argument of orangefs_bufmap_put()Al Viro2016-02-121-1/+2
| | | | | | | | it's always equal to __orangefs_bufmap and the latter can't change until we are done Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Mike Marshall <hubcap@omnibond.com>
* orangefs: get rid of MSECS_TO_JIFFIESAl Viro2016-01-231-3/+1
| | | | | | | | | All timeouts are in _seconds_, so all calls are of form MSECS_TO_JIFFIES(n * 1000), which is a convoluted way to spell n * HZ. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Mike Marshall <hubcap@omnibond.com>
* orangefs: Fix some more global namespace pollution.Martin Brandenburg2016-01-041-5/+5
| | | | | | | This only changes the names of things, so there is no functional change. Signed-off-by: Martin Brandenburg <martin@omnibond.com> Signed-off-by: Mike Marshall <hubcap@omnibond.com>
* orangefs: Do not unref if there is no bufmap.Martin Brandenburg2015-12-171-8/+19
| | | | | Signed-off-by: Mike Marshall <hubcap@omnibond.com> Signed-off-by: Martin Brandenburg <martin@omnibond.com>
* orangefs: Remove useless inline qualifier from bufmap functions.Martin Brandenburg2015-12-171-2/+2
| | | | | | | | | | | All callers were outside of the file these functions were declared in, so nothing was ever inlined anyway. Further this happens before I/O and any speedup by not having to do a call will be dwarfed by the time it takes to talk to the server. Signed-off-by: Mike Marshall <hubcap@omnibond.com> Signed-off-by: Martin Brandenburg <martin@omnibond.com>
* orangefs: Change visibility of several bufmap helpers to static.Martin Brandenburg2015-12-171-2/+10
| | | | | Signed-off-by: Mike Marshall <hubcap@omnibond.com> Signed-off-by: Martin Brandenburg <martin@omnibond.com>
* Orangefs: Don't wait the old-fashioned way.Mike Marshall2015-12-141-8/+7
| | | | | | | Get rid of add_wait_queue, set_current_state, etc, and use the wait_event() model. Signed-off-by: Mike Marshall <hubcap@omnibond.com>
* Orangefs: improve commentsMike Marshall2015-12-111-3/+6
| | | | Signed-off-by: Mike Marshall <hubcap@omnibond.com>
* Orangefs: change pvfs2 filenames to orangefsMike Marshall2015-12-041-0/+558
Also changed references within source files that referred to header files whose names had changed. Signed-off-by: Mike Marshall <hubcap@omnibond.com>
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-02 06:40:47 +0000