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c63c7b0513
linux/fs/nfs
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Trond Myklebust c63c7b0513 NFS: Fix a race when doing NFS write coalescing 
Currently we do write coalescing in a very inefficient manner: one pass in
generic_writepages() in order to lock the pages for writing, then one pass
in nfs_flush_mapping() and/or nfs_sync_mapping_wait() in order to gather
the locked pages for coalescing into RPC requests of size "wsize".

In fact, it turns out there is actually a deadlock possible here since we
only start I/O on the second pass. If the user signals the process while
we're in nfs_sync_mapping_wait(), for instance, then we may exit before
starting I/O on all the requests that have been queued up.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2007-04-30 22:17:06 -07:00
..
callback_proc.c [PATCH] fs/nfs/callback* passes error values big-endian 2006-10-20 10:26:40 -07:00
callback_xdr.c [PATCH] knfsd: SUNRPC: Provide room in svc_rqst for larger addresses 2007-02-12 09:48:36 -08:00
callback.c [PATCH] knfsd: SUNRPC: Provide room in svc_rqst for larger addresses 2007-02-12 09:48:36 -08:00
callback.h [PATCH] xdr annotations: fs/nfs/callback* 2006-10-20 10:26:40 -07:00
client.c Merge branch 'master' of /home/trondmy/kernel/linux-2.6/ 2007-02-12 22:43:25 -08:00
delegation.c [PATCH] fs: Removing useless casts 2006-09-27 08:26:10 -07:00
delegation.h NFS: Rename struct nfs4_client to struct nfs_client 2006-09-22 23:24:31 -04:00
dir.c NFS: Fix an Oops in nfs_setattr() 2007-04-14 21:46:47 -07:00
direct.c NFS: Fix two bugs in the O_DIRECT write code 2007-04-14 21:46:48 -07:00
file.c [PATCH] mark struct inode_operations const 2 2007-02-12 09:48:46 -08:00
getroot.c NFSv4: Don't require that NFSv4 mount paths begin with '/' 2007-02-03 15:35:05 -08:00
idmap.c [PATCH] nfs: change uses of f_{dentry,vfsmnt} to use f_path 2006-12-08 08:28:41 -08:00
inode.c NFS: Fix an Oops in nfs_setattr() 2007-04-14 21:46:47 -07:00
internal.h NFSv4: Cleanups for fs_locations code. 2007-02-03 15:35:06 -08:00
iostat.h
Makefile NFS: Share NFS superblocks per-protocol per-server per-FSID 2006-09-22 23:24:37 -04:00
mount_clnt.c [PATCH] xdr annotations: mount_clnt 2006-10-20 10:26:41 -07:00
namespace.c [PATCH] mark struct inode_operations const 2 2007-02-12 09:48:46 -08:00
nfs2xdr.c [PATCH] xdr annotations: NFS readdir entries 2006-10-20 10:26:40 -07:00
nfs3acl.c
nfs3proc.c NFS: Remove nfs_readpage_sync() 2007-02-03 15:35:06 -08:00
nfs3xdr.c [PATCH] xdr annotations: NFS readdir entries 2006-10-20 10:26:40 -07:00
nfs4_fs.h Merge branch 'master' of /home/trondmy/kernel/linux-2.6/ 2007-02-12 22:43:25 -08:00
nfs4namespace.c NFSv4: /proc/mounts displays the wrong server name for referrals 2007-02-03 15:35:10 -08:00
nfs4proc.c Merge branch 'master' of /home/trondmy/kernel/linux-2.6/ 2007-02-12 22:43:25 -08:00
nfs4renewd.c [PATCH] remove many unneeded #includes of sched.h 2007-02-14 08:09:54 -08:00
nfs4state.c NFS: Share NFS superblocks per-protocol per-server per-FSID 2006-09-22 23:24:37 -04:00
nfs4xdr.c NFSv4: Fix NFS4_enc_server_caps_sz/NFS4_dec_server_caps_sz 2007-02-03 15:35:03 -08:00
nfsroot.c [NET]: ipconfig and nfsroot annotations 2006-12-02 21:21:09 -08:00
pagelist.c NFS: Fix a race when doing NFS write coalescing 2007-04-30 22:17:06 -07:00
proc.c NFS: Remove nfs_readpage_sync() 2007-02-03 15:35:06 -08:00
read.c NFS: Cleanup for nfs_readpages() 2007-04-30 22:17:05 -07:00
super.c NFS: statfs error-handling fix 2007-04-30 22:17:02 -07:00
symlink.c [PATCH] mark struct inode_operations const 2 2007-02-12 09:48:46 -08:00
sysctl.c [PATCH] nfs: fix congestion control 2007-03-16 19:25:05 -07:00
unlink.c
write.c NFS: Fix a race when doing NFS write coalescing 2007-04-30 22:17:06 -07:00