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path: root/fs/ceph/xattr.c
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2011-06-07ceph: use ihold when we already have an inode refSage Weil
We should use ihold whenever we already have a stable inode ref, even when we aren't holding i_lock. This avoids adding new and unnecessary locking dependencies. Signed-off-by: Sage Weil <sage@newdream.net>
2011-05-04ceph: do not call __mark_dirty_inode under i_lockSage Weil
The __mark_dirty_inode helper now takes i_lock as of 250df6ed. Fix the one ceph callers that held i_lock (__ceph_mark_dirty_caps) to return the flags value so that the callers can do it outside of i_lock. Signed-off-by: Sage Weil <sage@newdream.net>
2011-01-13ceph: fix xattr rbtree searchSage Weil
Fix xattr name comparison in rbtree search for strings that share a prefix. The *name argument is null terminated, but the xattr name is not, so we need to use strncmp, but that means adjusting for the case where name is a prefix of xattr->name. The corresponding case in __set_xattr() already handles this properly (although in that case *name is also not null terminated). Reported-by: Sergiy Kibrik <sakib@meta.ua> Signed-off-by: Sage Weil <sage@newdream.net>
2010-10-20fs/ceph/xattr.c: Use kmemdupJulia Lawall
Convert a sequence of kmalloc and memcpy to use kmemdup. The semantic patch that performs this transformation is: (http://coccinelle.lip6.fr/) // <smpl> @@ expression a,flag,len; expression arg,e1,e2; statement S; @@ a = - \(kmalloc\|kzalloc\)(len,flag) + kmemdup(arg,len,flag) <... when != a if (a == NULL || ...) S ...> - memcpy(a,arg,len+1); // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: Sage Weil <sage@newdream.net>
2010-10-20ceph: factor out libceph from Ceph file systemYehuda Sadeh
This factors out protocol and low-level storage parts of ceph into a separate libceph module living in net/ceph and include/linux/ceph. This is mostly a matter of moving files around. However, a few key pieces of the interface change as well: - ceph_client becomes ceph_fs_client and ceph_client, where the latter captures the mon and osd clients, and the fs_client gets the mds client and file system specific pieces. - Mount option parsing and debugfs setup is correspondingly broken into two pieces. - The mon client gets a generic handler callback for otherwise unknown messages (mds map, in this case). - The basic supported/required feature bits can be expanded (and are by ceph_fs_client). No functional change, aside from some subtle error handling cases that got cleaned up in the refactoring process. Signed-off-by: Sage Weil <sage@newdream.net>
2010-08-22ceph: include dirty xattrs state in snapped capsSage Weil
When we snapshot dirty metadata that needs to be written back to the MDS, include dirty xattr metadata. Make the capsnap reference the encoded xattr blob so that it will be written back in the FLUSHSNAP op. Also fix the capsnap creation guard to include dirty auth or file bits, not just tests specific to dirty file data or file writes in progress (this fixes auth metadata writeback). Signed-off-by: Sage Weil <sage@newdream.net>
2010-08-01ceph: code cleanupYehuda Sadeh
Mainly fixing minor issues reported by sparse. Signed-off-by: Yehuda Sadeh <yehuda@hq.newdream.net> Signed-off-by: Sage Weil <sage@newdream.net>
2010-05-17ceph: use ceph. prefix for virtual xattrsSage Weil
Drop the 'user.' prefix and use just 'ceph.' for fs virtual xattrs. Signed-off-by: Sage Weil <sage@newdream.net>
2010-05-17ceph: listxattr should compare version by >=Henry C Chang
If the version hasn't changed, don't rebuild the index. Signed-off-by: Henry C Chang <henry_c_chang@tcloudcomputing.com> Signed-off-by: Sage Weil <sage@newdream.net>
2010-05-17ceph: use ceph_sb_to_client instead of ceph_clientCheng Renquan
ceph_sb_to_client and ceph_client are really identical, we need to dump one; while function ceph_client is confusing with "struct ceph_client", ceph_sb_to_client's definition is more clear; so we'd better switch all call to ceph_sb_to_client. -static inline struct ceph_client *ceph_client(struct super_block *sb) -{ - return sb->s_fs_info; -} Signed-off-by: Cheng Renquan <crquan@gmail.com> Signed-off-by: Sage Weil <sage@newdream.net>
2010-05-17ceph: cleanup: remove dead codeDan Carpenter
"xattr" is never NULL here. We took care of that in the previous if statement block. Signed-off-by: Dan Carpenter <error27@gmail.com> Signed-off-by: Sage Weil <sage@newdream.net>
2010-05-17ceph: use __page_cache_alloc and add_to_page_cache_lruYehuda Sadeh
Following Nick Piggin patches in btrfs, pagecache pages should be allocated with __page_cache_alloc, so they obey pagecache memory policies. Also, using add_to_page_cache_lru instead of using a private pagevec where applicable. Signed-off-by: Yehuda Sadeh <yehuda@hq.newdream.net> Signed-off-by: Sage Weil <sage@newdream.net>
2010-03-30include cleanup: Update gfp.h and slab.h includes to prepare for breaking ↵Tejun Heo
implicit slab.h inclusion from percpu.h percpu.h is included by sched.h and module.h and thus ends up being included when building most .c files. percpu.h includes slab.h which in turn includes gfp.h making everything defined by the two files universally available and complicating inclusion dependencies. percpu.h -> slab.h dependency is about to be removed. Prepare for this change by updating users of gfp and slab facilities include those headers directly instead of assuming availability. As this conversion needs to touch large number of source files, the following script is used as the basis of conversion. http://userweb.kernel.org/~tj/misc/slabh-sweep.py The script does the followings. * Scan files for gfp and slab usages and update includes such that only the necessary includes are there. ie. if only gfp is used, gfp.h, if slab is used, slab.h. * When the script inserts a new include, it looks at the include blocks and try to put the new include such that its order conforms to its surrounding. It's put in the include block which contains core kernel includes, in the same order that the rest are ordered - alphabetical, Christmas tree, rev-Xmas-tree or at the end if there doesn't seem to be any matching order. * If the script can't find a place to put a new include (mostly because the file doesn't have fitting include block), it prints out an error message indicating which .h file needs to be added to the file. The conversion was done in the following steps. 1. The initial automatic conversion of all .c files updated slightly over 4000 files, deleting around 700 includes and adding ~480 gfp.h and ~3000 slab.h inclusions. The script emitted errors for ~400 files. 2. Each error was manually checked. Some didn't need the inclusion, some needed manual addition while adding it to implementation .h or embedding .c file was more appropriate for others. This step added inclusions to around 150 files. 3. The script was run again and the output was compared to the edits from #2 to make sure no file was left behind. 4. Several build tests were done and a couple of problems were fixed. e.g. lib/decompress_*.c used malloc/free() wrappers around slab APIs requiring slab.h to be added manually. 5. The script was run on all .h files but without automatically editing them as sprinkling gfp.h and slab.h inclusions around .h files could easily lead to inclusion dependency hell. Most gfp.h inclusion directives were ignored as stuff from gfp.h was usually wildly available and often used in preprocessor macros. Each slab.h inclusion directive was examined and added manually as necessary. 6. percpu.h was updated not to include slab.h. 7. Build test were done on the following configurations and failures were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my distributed build env didn't work with gcov compiles) and a few more options had to be turned off depending on archs to make things build (like ipr on powerpc/64 which failed due to missing writeq). * x86 and x86_64 UP and SMP allmodconfig and a custom test config. * powerpc and powerpc64 SMP allmodconfig * sparc and sparc64 SMP allmodconfig * ia64 SMP allmodconfig * s390 SMP allmodconfig * alpha SMP allmodconfig * um on x86_64 SMP allmodconfig 8. percpu.h modifications were reverted so that it could be applied as a separate patch and serve as bisection point. Given the fact that I had only a couple of failures from tests on step 6, I'm fairly confident about the coverage of this conversion patch. If there is a breakage, it's likely to be something in one of the arch headers which should be easily discoverable easily on most builds of the specific arch. Signed-off-by: Tejun Heo <tj@kernel.org> Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
2009-12-07ceph: simplify ceph_buffer interfaceSage Weil
We never allocate the ceph_buffer and buffer separtely, so use a single constructor. Disallow put on NULL buffer; make the caller check. Signed-off-by: Sage Weil <sage@newdream.net>
2009-11-21fs/ceph: introduce missing kfreeJulia Lawall
Error handling code following a kmalloc should free the allocated data. The semantic match that finds this problem is as follows: (http://www.emn.fr/x-info/coccinelle/) // <smpl> @r exists@ local idexpression x; statement S; expression E; identifier f,f1,l; position p1,p2; expression *ptr != NULL; @@ x@p1 = \(kmalloc\|kzalloc\|kcalloc\)(...); ... if (x == NULL) S <... when != x when != if (...) { <+...x...+> } ( x->f1 = E | (x->f1 == NULL || ...) | f(...,x->f1,...) ) ...> ( return \(0\|<+...x...+>\|ptr\); | return@p2 ...; ) @script:python@ p1 << r.p1; p2 << r.p2; @@ print "* file: %s kmalloc %s return %s" % (p1[0].file,p1[0].line,p2[0].line) // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: Sage Weil <sage@newdream.net>
2009-11-01ceph: fix uninitialized err variableSage Weil
Fixes warning fs/ceph/xattr.c: In function '__build_xattrs': fs/ceph/xattr.c:353: warning: 'err' may be used uninitialized in this function Signed-off-by: Sage Weil <sage@newdream.net>
2009-10-07ceph: include preferred_osd in file layout virtual xattrSage Weil
Signed-off-by: Sage Weil <sage@newdream.net>
2009-10-06ceph: inode operationsSage Weil
Inode cache and inode operations. We also include routines to incorporate metadata structures returned by the MDS into the client cache, and some helpers to deal with file capabilities and metadata leases. The bulk of that work is done by fill_inode() and fill_trace(). Signed-off-by: Sage Weil <sage@newdream.net>