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02e1215f9f
linux_dsm_epyc7002/fs/nfsd
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Jeff Layton 02e1215f9f nfsd: Avoid taking state_lock while holding inode lock in nfsd_break_one_deleg 
state_lock is a heavily contended global lock. We don't want to grab
that while simultaneously holding the inode->i_lock.

Add a new per-nfs4_file lock that we can use to protect the
per-nfs4_file delegation list. Hold that while walking the list in the
break_deleg callback and queue the workqueue job for each one.

The workqueue job can then take the state_lock and do the list
manipulations without the i_lock being held prior to starting the
rpc call.

Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Signed-off-by: Jeff Layton <jlayton@primarydata.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2014-07-16 21:06:12 -04:00
..
acl.h nfsd4: remove nfs4_acl_new 2014-07-08 17:14:27 -04:00
auth.c NFSD: Cleanup unused variable in nfsd_setuser() 2014-05-30 17:32:21 -04:00
auth.h nfsd: Remove nfsd_luid, nfsd_lgid, nfsd_ruid and nfsd_rgid 2013-02-13 06:15:51 -08:00
cache.h nfsd: get rid of unused function definition 2014-01-02 17:53:23 -05:00
current_stateid.h nfsd41: use current stateid by value 2012-02-15 11:20:45 -05:00
export.c NFSD: Using exp_get for export getting 2014-06-23 11:31:36 -04:00
export.h NFSD: Using exp_get for export getting 2014-06-23 11:31:36 -04:00
fault_inject.c nfsd: properly handle embedded newlines in fault_injection input 2014-06-23 11:31:38 -04:00
idmap.h nfsd4: use xdr_reserve_space in attribute encoding 2014-05-28 14:52:34 -04:00
Kconfig nfsd: fix Kconfig syntax 2013-10-26 15:37:26 -04:00
lockd.c nfsd: Remove deprecated nfsctl system call and related code. 2011-07-15 18:58:42 -04:00
Makefile NFSD: Added fault injection 2011-11-07 21:10:47 -05:00
netns.h nfsd: NFSv4 lock-owners are not associated to a specific file 2014-07-09 20:54:58 -04:00
nfs2acl.c NFSD: Check acl returned from get_acl/posix_acl_from_mode 2014-07-11 15:03:53 -04:00
nfs3acl.c NFSD: Check acl returned from get_acl/posix_acl_from_mode 2014-07-11 15:03:53 -04:00
nfs3proc.c NFSD: Remove iattr parameter from nfsd_symlink() 2014-07-08 17:14:31 -04:00
nfs3xdr.c NFSD: Using min/max/min_t/max_t for calculate 2014-06-23 11:31:36 -04:00
nfs4acl.c NFSD: Check acl returned from get_acl/posix_acl_from_mode 2014-07-11 15:03:53 -04:00
nfs4callback.c nfsd: Avoid taking state_lock while holding inode lock in nfsd_break_one_deleg 2014-07-16 21:06:12 -04:00
nfs4idmap.c nfsd4: use xdr_reserve_space in attribute encoding 2014-05-28 14:52:34 -04:00
nfs4proc.c nfsd: Convert nfs4_check_open_reclaim() to work with lookup_clientid() 2014-07-09 20:55:07 -04:00
nfs4recover.c nfsd: switch to %p[dD] 2013-10-24 23:34:51 -04:00
nfs4state.c nfsd: Avoid taking state_lock while holding inode lock in nfsd_break_one_deleg 2014-07-16 21:06:12 -04:00
nfs4xdr.c NFSD: Fix bad checking of space for padding in splice read 2014-07-11 15:19:25 -04:00
nfscache.c nfsd: clean up sparse endianness warnings in nfscache.c 2014-06-23 11:31:37 -04:00
nfsctl.c nfsd: add a new /proc/fs/nfsd/max_connections file 2014-07-08 17:14:32 -04:00
nfsd.h NFSD: Get rid of empty function nfs4_state_init 2014-05-08 14:59:52 -04:00
nfsfh.c nfsd: add appropriate __force directives to filehandle generation code 2014-06-23 11:31:37 -04:00
nfsfh.h nfsd: add appropriate __force directives to filehandle generation code 2014-06-23 11:31:37 -04:00
nfsproc.c nfsd: add a nfserrno mapping for -E2BIG to nfserr_fbig 2014-07-09 20:55:03 -04:00
nfssvc.c nfsd: add a new /proc/fs/nfsd/max_connections file 2014-07-08 17:14:32 -04:00
nfsxdr.c NFSD: Using min/max/min_t/max_t for calculate 2014-06-23 11:31:36 -04:00
state.h nfsd: Avoid taking state_lock while holding inode lock in nfsd_break_one_deleg 2014-07-16 21:06:12 -04:00
stats.c nfsd: move <linux/nfsd/stats.h> to fs/nfsd 2014-05-06 17:54:55 -04:00
stats.h nfsd: move <linux/nfsd/stats.h> to fs/nfsd 2014-05-06 17:54:55 -04:00
vfs.c nfsd: properly convert return from commit_metadata to __be32 2014-07-09 20:55:02 -04:00
vfs.h NFSD: Remove iattr parameter from nfsd_symlink() 2014-07-08 17:14:31 -04:00
xdr3.h nfsd: fix encode_entryplus_baggage stack usage 2014-01-23 13:50:27 -05:00
xdr4.h nfsd: Allow struct nfsd4_compound_state to cache the nfs4_client 2014-07-09 20:55:04 -04:00
xdr4cb.h nfsd4: check backchannel attributes on create_session 2013-04-09 16:53:56 -04:00
xdr.h nfsd: handle vfs_getattr errors in acl protocol 2013-02-26 02:46:09 -05:00