Loading .gitignore +1 −0 Original line number Original line Diff line number Diff line Loading @@ -25,6 +25,7 @@ *.elf *.elf *.bin *.bin *.gz *.gz *.bz2 *.lzma *.lzma *.patch *.patch *.gcno *.gcno Loading Documentation/fb/framebuffer.txt +2 −4 Original line number Original line Diff line number Diff line Loading @@ -312,10 +312,8 @@ and to the following documentation: 8. Mailing list 8. Mailing list --------------- --------------- There are several frame buffer device related mailing lists at SourceForge: There is a frame buffer device related mailing list at kernel.org: - linux-fbdev-announce@lists.sourceforge.net, for announcements, linux-fbdev@vger.kernel.org. - linux-fbdev-user@lists.sourceforge.net, for generic user support, - linux-fbdev-devel@lists.sourceforge.net, for project developers. Point your web browser to http://sourceforge.net/projects/linux-fbdev/ for Point your web browser to http://sourceforge.net/projects/linux-fbdev/ for subscription information and archive browsing. subscription information and archive browsing. Loading Documentation/filesystems/caching/fscache.txt +110 −0 Original line number Original line Diff line number Diff line Loading @@ -235,6 +235,7 @@ proc files. neg=N Number of negative lookups made neg=N Number of negative lookups made pos=N Number of positive lookups made pos=N Number of positive lookups made crt=N Number of objects created by lookup crt=N Number of objects created by lookup tmo=N Number of lookups timed out and requeued Updates n=N Number of update cookie requests seen Updates n=N Number of update cookie requests seen nul=N Number of upd reqs given a NULL parent nul=N Number of upd reqs given a NULL parent run=N Number of upd reqs granted CPU time run=N Number of upd reqs granted CPU time Loading @@ -250,8 +251,10 @@ proc files. ok=N Number of successful alloc reqs ok=N Number of successful alloc reqs wt=N Number of alloc reqs that waited on lookup completion wt=N Number of alloc reqs that waited on lookup completion nbf=N Number of alloc reqs rejected -ENOBUFS nbf=N Number of alloc reqs rejected -ENOBUFS int=N Number of alloc reqs aborted -ERESTARTSYS ops=N Number of alloc reqs submitted ops=N Number of alloc reqs submitted owt=N Number of alloc reqs waited for CPU time owt=N Number of alloc reqs waited for CPU time abt=N Number of alloc reqs aborted due to object death Retrvls n=N Number of retrieval (read) requests seen Retrvls n=N Number of retrieval (read) requests seen ok=N Number of successful retr reqs ok=N Number of successful retr reqs wt=N Number of retr reqs that waited on lookup completion wt=N Number of retr reqs that waited on lookup completion Loading @@ -261,6 +264,7 @@ proc files. oom=N Number of retr reqs failed -ENOMEM oom=N Number of retr reqs failed -ENOMEM ops=N Number of retr reqs submitted ops=N Number of retr reqs submitted owt=N Number of retr reqs waited for CPU time owt=N Number of retr reqs waited for CPU time abt=N Number of retr reqs aborted due to object death Stores n=N Number of storage (write) requests seen Stores n=N Number of storage (write) requests seen ok=N Number of successful store reqs ok=N Number of successful store reqs agn=N Number of store reqs on a page already pending storage agn=N Number of store reqs on a page already pending storage Loading @@ -268,12 +272,37 @@ proc files. oom=N Number of store reqs failed -ENOMEM oom=N Number of store reqs failed -ENOMEM ops=N Number of store reqs submitted ops=N Number of store reqs submitted run=N Number of store reqs granted CPU time run=N Number of store reqs granted CPU time pgs=N Number of pages given store req processing time rxd=N Number of store reqs deleted from tracking tree olm=N Number of store reqs over store limit VmScan nos=N Number of release reqs against pages with no pending store gon=N Number of release reqs against pages stored by time lock granted bsy=N Number of release reqs ignored due to in-progress store can=N Number of page stores cancelled due to release req Ops pend=N Number of times async ops added to pending queues Ops pend=N Number of times async ops added to pending queues run=N Number of times async ops given CPU time run=N Number of times async ops given CPU time enq=N Number of times async ops queued for processing enq=N Number of times async ops queued for processing can=N Number of async ops cancelled rej=N Number of async ops rejected due to object lookup/create failure dfr=N Number of async ops queued for deferred release dfr=N Number of async ops queued for deferred release rel=N Number of async ops released rel=N Number of async ops released gc=N Number of deferred-release async ops garbage collected gc=N Number of deferred-release async ops garbage collected CacheOp alo=N Number of in-progress alloc_object() cache ops luo=N Number of in-progress lookup_object() cache ops luc=N Number of in-progress lookup_complete() cache ops gro=N Number of in-progress grab_object() cache ops upo=N Number of in-progress update_object() cache ops dro=N Number of in-progress drop_object() cache ops pto=N Number of in-progress put_object() cache ops syn=N Number of in-progress sync_cache() cache ops atc=N Number of in-progress attr_changed() cache ops rap=N Number of in-progress read_or_alloc_page() cache ops ras=N Number of in-progress read_or_alloc_pages() cache ops alp=N Number of in-progress allocate_page() cache ops als=N Number of in-progress allocate_pages() cache ops wrp=N Number of in-progress write_page() cache ops ucp=N Number of in-progress uncache_page() cache ops dsp=N Number of in-progress dissociate_pages() cache ops (*) /proc/fs/fscache/histogram (*) /proc/fs/fscache/histogram Loading @@ -299,6 +328,87 @@ proc files. jiffy range covered, and the SECS field the equivalent number of seconds. jiffy range covered, and the SECS field the equivalent number of seconds. =========== OBJECT LIST =========== If CONFIG_FSCACHE_OBJECT_LIST is enabled, the FS-Cache facility will maintain a list of all the objects currently allocated and allow them to be viewed through: /proc/fs/fscache/objects This will look something like: [root@andromeda ~]# head /proc/fs/fscache/objects OBJECT PARENT STAT CHLDN OPS OOP IPR EX READS EM EV F S | NETFS_COOKIE_DEF TY FL NETFS_DATA OBJECT_KEY, AUX_DATA ======== ======== ==== ===== === === === == ===== == == = = | ================ == == ================ ================ 17e4b 2 ACTV 0 0 0 0 0 0 7b 4 0 8 | NFS.fh DT 0 ffff88001dd82820 010006017edcf8bbc93b43298fdfbe71e50b57b13a172c0117f38472, e567634700000000000000000000000063f2404a000000000000000000000000c9030000000000000000000063f2404a 1693a 2 ACTV 0 0 0 0 0 0 7b 4 0 8 | NFS.fh DT 0 ffff88002db23380 010006017edcf8bbc93b43298fdfbe71e50b57b1e0162c01a2df0ea6, 420ebc4a000000000000000000000000420ebc4a0000000000000000000000000e1801000000000000000000420ebc4a where the first set of columns before the '|' describe the object: COLUMN DESCRIPTION ======= =============================================================== OBJECT Object debugging ID (appears as OBJ%x in some debug messages) PARENT Debugging ID of parent object STAT Object state CHLDN Number of child objects of this object OPS Number of outstanding operations on this object OOP Number of outstanding child object management operations IPR EX Number of outstanding exclusive operations READS Number of outstanding read operations EM Object's event mask EV Events raised on this object F Object flags S Object slow-work work item flags and the second set of columns describe the object's cookie, if present: COLUMN DESCRIPTION =============== ======================================================= NETFS_COOKIE_DEF Name of netfs cookie definition TY Cookie type (IX - index, DT - data, hex - special) FL Cookie flags NETFS_DATA Netfs private data stored in the cookie OBJECT_KEY Object key } 1 column, with separating comma AUX_DATA Object aux data } presence may be configured The data shown may be filtered by attaching the a key to an appropriate keyring before viewing the file. Something like: keyctl add user fscache:objlist <restrictions> @s where <restrictions> are a selection of the following letters: K Show hexdump of object key (don't show if not given) A Show hexdump of object aux data (don't show if not given) and the following paired letters: C Show objects that have a cookie c Show objects that don't have a cookie B Show objects that are busy b Show objects that aren't busy W Show objects that have pending writes w Show objects that don't have pending writes R Show objects that have outstanding reads r Show objects that don't have outstanding reads S Show objects that have slow work queued s Show objects that don't have slow work queued If neither side of a letter pair is given, then both are implied. For example: keyctl add user fscache:objlist KB @s shows objects that are busy, and lists their object keys, but does not dump their auxiliary data. It also implies "CcWwRrSs", but as 'B' is given, 'b' is not implied. By default all objects and all fields will be shown. ========= ========= DEBUGGING DEBUGGING ========= ========= Loading Documentation/filesystems/caching/netfs-api.txt +20 −1 Original line number Original line Diff line number Diff line Loading @@ -641,7 +641,7 @@ data file must be retired (see the relinquish cookie function below). Furthermore, note that this does not cancel the asynchronous read or write Furthermore, note that this does not cancel the asynchronous read or write operation started by the read/alloc and write functions, so the page operation started by the read/alloc and write functions, so the page invalidation and release functions must use: invalidation functions must use: bool fscache_check_page_write(struct fscache_cookie *cookie, bool fscache_check_page_write(struct fscache_cookie *cookie, struct page *page); struct page *page); Loading @@ -654,6 +654,25 @@ to see if a page is being written to the cache, and: to wait for it to finish if it is. to wait for it to finish if it is. When releasepage() is being implemented, a special FS-Cache function exists to manage the heuristics of coping with vmscan trying to eject pages, which may conflict with the cache trying to write pages to the cache (which may itself need to allocate memory): bool fscache_maybe_release_page(struct fscache_cookie *cookie, struct page *page, gfp_t gfp); This takes the netfs cookie, and the page and gfp arguments as supplied to releasepage(). It will return false if the page cannot be released yet for some reason and if it returns true, the page has been uncached and can now be released. To make a page available for release, this function may wait for an outstanding storage request to complete, or it may attempt to cancel the storage request - in which case the page will not be stored in the cache this time. ========================== ========================== INDEX AND DATA FILE UPDATE INDEX AND DATA FILE UPDATE ========================== ========================== Loading Documentation/filesystems/ocfs2.txt +3 −3 Original line number Original line Diff line number Diff line Loading @@ -20,15 +20,16 @@ Lots of code taken from ext3 and other projects. Authors in alphabetical order: Authors in alphabetical order: Joel Becker <joel.becker@oracle.com> Joel Becker <joel.becker@oracle.com> Zach Brown <zach.brown@oracle.com> Zach Brown <zach.brown@oracle.com> Mark Fasheh <mark.fasheh@oracle.com> Mark Fasheh <mfasheh@suse.com> Kurt Hackel <kurt.hackel@oracle.com> Kurt Hackel <kurt.hackel@oracle.com> Tao Ma <tao.ma@oracle.com> Sunil Mushran <sunil.mushran@oracle.com> Sunil Mushran <sunil.mushran@oracle.com> Manish Singh <manish.singh@oracle.com> Manish Singh <manish.singh@oracle.com> Tiger Yang <tiger.yang@oracle.com> Caveats Caveats ======= ======= Features which OCFS2 does not support yet: Features which OCFS2 does not support yet: - quotas - Directory change notification (F_NOTIFY) - Directory change notification (F_NOTIFY) - Distributed Caching (F_SETLEASE/F_GETLEASE/break_lease) - Distributed Caching (F_SETLEASE/F_GETLEASE/break_lease) Loading Loading @@ -70,7 +71,6 @@ commit=nrsec (*) Ocfs2 can be told to sync all its data and metadata performance. performance. localalloc=8(*) Allows custom localalloc size in MB. If the value is too localalloc=8(*) Allows custom localalloc size in MB. If the value is too large, the fs will silently revert it to the default. large, the fs will silently revert it to the default. Localalloc is not enabled for local mounts. localflocks This disables cluster aware flock. localflocks This disables cluster aware flock. inode64 Indicates that Ocfs2 is allowed to create inodes at inode64 Indicates that Ocfs2 is allowed to create inodes at any location in the filesystem, including those which any location in the filesystem, including those which Loading Loading
.gitignore +1 −0 Original line number Original line Diff line number Diff line Loading @@ -25,6 +25,7 @@ *.elf *.elf *.bin *.bin *.gz *.gz *.bz2 *.lzma *.lzma *.patch *.patch *.gcno *.gcno Loading
Documentation/fb/framebuffer.txt +2 −4 Original line number Original line Diff line number Diff line Loading @@ -312,10 +312,8 @@ and to the following documentation: 8. Mailing list 8. Mailing list --------------- --------------- There are several frame buffer device related mailing lists at SourceForge: There is a frame buffer device related mailing list at kernel.org: - linux-fbdev-announce@lists.sourceforge.net, for announcements, linux-fbdev@vger.kernel.org. - linux-fbdev-user@lists.sourceforge.net, for generic user support, - linux-fbdev-devel@lists.sourceforge.net, for project developers. Point your web browser to http://sourceforge.net/projects/linux-fbdev/ for Point your web browser to http://sourceforge.net/projects/linux-fbdev/ for subscription information and archive browsing. subscription information and archive browsing. Loading
Documentation/filesystems/caching/fscache.txt +110 −0 Original line number Original line Diff line number Diff line Loading @@ -235,6 +235,7 @@ proc files. neg=N Number of negative lookups made neg=N Number of negative lookups made pos=N Number of positive lookups made pos=N Number of positive lookups made crt=N Number of objects created by lookup crt=N Number of objects created by lookup tmo=N Number of lookups timed out and requeued Updates n=N Number of update cookie requests seen Updates n=N Number of update cookie requests seen nul=N Number of upd reqs given a NULL parent nul=N Number of upd reqs given a NULL parent run=N Number of upd reqs granted CPU time run=N Number of upd reqs granted CPU time Loading @@ -250,8 +251,10 @@ proc files. ok=N Number of successful alloc reqs ok=N Number of successful alloc reqs wt=N Number of alloc reqs that waited on lookup completion wt=N Number of alloc reqs that waited on lookup completion nbf=N Number of alloc reqs rejected -ENOBUFS nbf=N Number of alloc reqs rejected -ENOBUFS int=N Number of alloc reqs aborted -ERESTARTSYS ops=N Number of alloc reqs submitted ops=N Number of alloc reqs submitted owt=N Number of alloc reqs waited for CPU time owt=N Number of alloc reqs waited for CPU time abt=N Number of alloc reqs aborted due to object death Retrvls n=N Number of retrieval (read) requests seen Retrvls n=N Number of retrieval (read) requests seen ok=N Number of successful retr reqs ok=N Number of successful retr reqs wt=N Number of retr reqs that waited on lookup completion wt=N Number of retr reqs that waited on lookup completion Loading @@ -261,6 +264,7 @@ proc files. oom=N Number of retr reqs failed -ENOMEM oom=N Number of retr reqs failed -ENOMEM ops=N Number of retr reqs submitted ops=N Number of retr reqs submitted owt=N Number of retr reqs waited for CPU time owt=N Number of retr reqs waited for CPU time abt=N Number of retr reqs aborted due to object death Stores n=N Number of storage (write) requests seen Stores n=N Number of storage (write) requests seen ok=N Number of successful store reqs ok=N Number of successful store reqs agn=N Number of store reqs on a page already pending storage agn=N Number of store reqs on a page already pending storage Loading @@ -268,12 +272,37 @@ proc files. oom=N Number of store reqs failed -ENOMEM oom=N Number of store reqs failed -ENOMEM ops=N Number of store reqs submitted ops=N Number of store reqs submitted run=N Number of store reqs granted CPU time run=N Number of store reqs granted CPU time pgs=N Number of pages given store req processing time rxd=N Number of store reqs deleted from tracking tree olm=N Number of store reqs over store limit VmScan nos=N Number of release reqs against pages with no pending store gon=N Number of release reqs against pages stored by time lock granted bsy=N Number of release reqs ignored due to in-progress store can=N Number of page stores cancelled due to release req Ops pend=N Number of times async ops added to pending queues Ops pend=N Number of times async ops added to pending queues run=N Number of times async ops given CPU time run=N Number of times async ops given CPU time enq=N Number of times async ops queued for processing enq=N Number of times async ops queued for processing can=N Number of async ops cancelled rej=N Number of async ops rejected due to object lookup/create failure dfr=N Number of async ops queued for deferred release dfr=N Number of async ops queued for deferred release rel=N Number of async ops released rel=N Number of async ops released gc=N Number of deferred-release async ops garbage collected gc=N Number of deferred-release async ops garbage collected CacheOp alo=N Number of in-progress alloc_object() cache ops luo=N Number of in-progress lookup_object() cache ops luc=N Number of in-progress lookup_complete() cache ops gro=N Number of in-progress grab_object() cache ops upo=N Number of in-progress update_object() cache ops dro=N Number of in-progress drop_object() cache ops pto=N Number of in-progress put_object() cache ops syn=N Number of in-progress sync_cache() cache ops atc=N Number of in-progress attr_changed() cache ops rap=N Number of in-progress read_or_alloc_page() cache ops ras=N Number of in-progress read_or_alloc_pages() cache ops alp=N Number of in-progress allocate_page() cache ops als=N Number of in-progress allocate_pages() cache ops wrp=N Number of in-progress write_page() cache ops ucp=N Number of in-progress uncache_page() cache ops dsp=N Number of in-progress dissociate_pages() cache ops (*) /proc/fs/fscache/histogram (*) /proc/fs/fscache/histogram Loading @@ -299,6 +328,87 @@ proc files. jiffy range covered, and the SECS field the equivalent number of seconds. jiffy range covered, and the SECS field the equivalent number of seconds. =========== OBJECT LIST =========== If CONFIG_FSCACHE_OBJECT_LIST is enabled, the FS-Cache facility will maintain a list of all the objects currently allocated and allow them to be viewed through: /proc/fs/fscache/objects This will look something like: [root@andromeda ~]# head /proc/fs/fscache/objects OBJECT PARENT STAT CHLDN OPS OOP IPR EX READS EM EV F S | NETFS_COOKIE_DEF TY FL NETFS_DATA OBJECT_KEY, AUX_DATA ======== ======== ==== ===== === === === == ===== == == = = | ================ == == ================ ================ 17e4b 2 ACTV 0 0 0 0 0 0 7b 4 0 8 | NFS.fh DT 0 ffff88001dd82820 010006017edcf8bbc93b43298fdfbe71e50b57b13a172c0117f38472, e567634700000000000000000000000063f2404a000000000000000000000000c9030000000000000000000063f2404a 1693a 2 ACTV 0 0 0 0 0 0 7b 4 0 8 | NFS.fh DT 0 ffff88002db23380 010006017edcf8bbc93b43298fdfbe71e50b57b1e0162c01a2df0ea6, 420ebc4a000000000000000000000000420ebc4a0000000000000000000000000e1801000000000000000000420ebc4a where the first set of columns before the '|' describe the object: COLUMN DESCRIPTION ======= =============================================================== OBJECT Object debugging ID (appears as OBJ%x in some debug messages) PARENT Debugging ID of parent object STAT Object state CHLDN Number of child objects of this object OPS Number of outstanding operations on this object OOP Number of outstanding child object management operations IPR EX Number of outstanding exclusive operations READS Number of outstanding read operations EM Object's event mask EV Events raised on this object F Object flags S Object slow-work work item flags and the second set of columns describe the object's cookie, if present: COLUMN DESCRIPTION =============== ======================================================= NETFS_COOKIE_DEF Name of netfs cookie definition TY Cookie type (IX - index, DT - data, hex - special) FL Cookie flags NETFS_DATA Netfs private data stored in the cookie OBJECT_KEY Object key } 1 column, with separating comma AUX_DATA Object aux data } presence may be configured The data shown may be filtered by attaching the a key to an appropriate keyring before viewing the file. Something like: keyctl add user fscache:objlist <restrictions> @s where <restrictions> are a selection of the following letters: K Show hexdump of object key (don't show if not given) A Show hexdump of object aux data (don't show if not given) and the following paired letters: C Show objects that have a cookie c Show objects that don't have a cookie B Show objects that are busy b Show objects that aren't busy W Show objects that have pending writes w Show objects that don't have pending writes R Show objects that have outstanding reads r Show objects that don't have outstanding reads S Show objects that have slow work queued s Show objects that don't have slow work queued If neither side of a letter pair is given, then both are implied. For example: keyctl add user fscache:objlist KB @s shows objects that are busy, and lists their object keys, but does not dump their auxiliary data. It also implies "CcWwRrSs", but as 'B' is given, 'b' is not implied. By default all objects and all fields will be shown. ========= ========= DEBUGGING DEBUGGING ========= ========= Loading
Documentation/filesystems/caching/netfs-api.txt +20 −1 Original line number Original line Diff line number Diff line Loading @@ -641,7 +641,7 @@ data file must be retired (see the relinquish cookie function below). Furthermore, note that this does not cancel the asynchronous read or write Furthermore, note that this does not cancel the asynchronous read or write operation started by the read/alloc and write functions, so the page operation started by the read/alloc and write functions, so the page invalidation and release functions must use: invalidation functions must use: bool fscache_check_page_write(struct fscache_cookie *cookie, bool fscache_check_page_write(struct fscache_cookie *cookie, struct page *page); struct page *page); Loading @@ -654,6 +654,25 @@ to see if a page is being written to the cache, and: to wait for it to finish if it is. to wait for it to finish if it is. When releasepage() is being implemented, a special FS-Cache function exists to manage the heuristics of coping with vmscan trying to eject pages, which may conflict with the cache trying to write pages to the cache (which may itself need to allocate memory): bool fscache_maybe_release_page(struct fscache_cookie *cookie, struct page *page, gfp_t gfp); This takes the netfs cookie, and the page and gfp arguments as supplied to releasepage(). It will return false if the page cannot be released yet for some reason and if it returns true, the page has been uncached and can now be released. To make a page available for release, this function may wait for an outstanding storage request to complete, or it may attempt to cancel the storage request - in which case the page will not be stored in the cache this time. ========================== ========================== INDEX AND DATA FILE UPDATE INDEX AND DATA FILE UPDATE ========================== ========================== Loading
Documentation/filesystems/ocfs2.txt +3 −3 Original line number Original line Diff line number Diff line Loading @@ -20,15 +20,16 @@ Lots of code taken from ext3 and other projects. Authors in alphabetical order: Authors in alphabetical order: Joel Becker <joel.becker@oracle.com> Joel Becker <joel.becker@oracle.com> Zach Brown <zach.brown@oracle.com> Zach Brown <zach.brown@oracle.com> Mark Fasheh <mark.fasheh@oracle.com> Mark Fasheh <mfasheh@suse.com> Kurt Hackel <kurt.hackel@oracle.com> Kurt Hackel <kurt.hackel@oracle.com> Tao Ma <tao.ma@oracle.com> Sunil Mushran <sunil.mushran@oracle.com> Sunil Mushran <sunil.mushran@oracle.com> Manish Singh <manish.singh@oracle.com> Manish Singh <manish.singh@oracle.com> Tiger Yang <tiger.yang@oracle.com> Caveats Caveats ======= ======= Features which OCFS2 does not support yet: Features which OCFS2 does not support yet: - quotas - Directory change notification (F_NOTIFY) - Directory change notification (F_NOTIFY) - Distributed Caching (F_SETLEASE/F_GETLEASE/break_lease) - Distributed Caching (F_SETLEASE/F_GETLEASE/break_lease) Loading Loading @@ -70,7 +71,6 @@ commit=nrsec (*) Ocfs2 can be told to sync all its data and metadata performance. performance. localalloc=8(*) Allows custom localalloc size in MB. If the value is too localalloc=8(*) Allows custom localalloc size in MB. If the value is too large, the fs will silently revert it to the default. large, the fs will silently revert it to the default. Localalloc is not enabled for local mounts. localflocks This disables cluster aware flock. localflocks This disables cluster aware flock. inode64 Indicates that Ocfs2 is allowed to create inodes at inode64 Indicates that Ocfs2 is allowed to create inodes at any location in the filesystem, including those which any location in the filesystem, including those which Loading
