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e8506d25f7
We negotiate rsize mounts (and it can be overridden by user) to typically 4MB, so using larger default I/O sizes from userspace (changing to 1MB default i/o size returned by stat) the performance is much better (and not just for long latency network connections) in most use cases for SMB3 than the default I/O size (which ends up being 128K for cp and can be even smaller for cp). This can be 4x slower or worse depending on network latency. By changing inode->blocksize from 32K (which was perhaps ok for very old SMB1/CIFS) to a larger value, 1MB (but still less than max size negotiated with the server which is 4MB, in order to minimize risk) it significantly increases performance for the noncached case, and slightly increases it for the cached case. This can be changed by the user on mount (specifying bsize= values from 16K to 16MB) to tune better for performance for applications that depend on blocksize. Signed-off-by: Steve French <stfrench@microsoft.com> Reviewed-by: Ronnie Sahlberg <lsahlber@redhat.com> CC: Stable <stable@vger.kernel.org>
87 lines
3.8 KiB
C
87 lines
3.8 KiB
C
/*
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* fs/cifs/cifs_fs_sb.h
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*
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* Copyright (c) International Business Machines Corp., 2002,2004
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* Author(s): Steve French (sfrench@us.ibm.com)
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*
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* This library is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published
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* by the Free Software Foundation; either version 2.1 of the License, or
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* (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
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* the GNU Lesser General Public License for more details.
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*
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*/
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#include <linux/rbtree.h>
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#ifndef _CIFS_FS_SB_H
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#define _CIFS_FS_SB_H
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#include <linux/backing-dev.h>
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#define CIFS_MOUNT_NO_PERM 1 /* do not do client vfs_perm check */
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#define CIFS_MOUNT_SET_UID 2 /* set current's euid in create etc. */
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#define CIFS_MOUNT_SERVER_INUM 4 /* inode numbers from uniqueid from server */
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#define CIFS_MOUNT_DIRECT_IO 8 /* do not write nor read through page cache */
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#define CIFS_MOUNT_NO_XATTR 0x10 /* if set - disable xattr support */
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#define CIFS_MOUNT_MAP_SPECIAL_CHR 0x20 /* remap illegal chars in filenames */
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#define CIFS_MOUNT_POSIX_PATHS 0x40 /* Negotiate posix pathnames if possible*/
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#define CIFS_MOUNT_UNX_EMUL 0x80 /* Network compat with SFUnix emulation */
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#define CIFS_MOUNT_NO_BRL 0x100 /* No sending byte range locks to srv */
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#define CIFS_MOUNT_CIFS_ACL 0x200 /* send ACL requests to non-POSIX srv */
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#define CIFS_MOUNT_OVERR_UID 0x400 /* override uid returned from server */
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#define CIFS_MOUNT_OVERR_GID 0x800 /* override gid returned from server */
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#define CIFS_MOUNT_DYNPERM 0x1000 /* allow in-memory only mode setting */
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#define CIFS_MOUNT_NOPOSIXBRL 0x2000 /* mandatory not posix byte range lock */
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#define CIFS_MOUNT_NOSSYNC 0x4000 /* don't do slow SMBflush on every sync*/
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#define CIFS_MOUNT_FSCACHE 0x8000 /* local caching enabled */
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#define CIFS_MOUNT_MF_SYMLINKS 0x10000 /* Minshall+French Symlinks enabled */
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#define CIFS_MOUNT_MULTIUSER 0x20000 /* multiuser mount */
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#define CIFS_MOUNT_STRICT_IO 0x40000 /* strict cache mode */
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#define CIFS_MOUNT_RWPIDFORWARD 0x80000 /* use pid forwarding for rw */
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#define CIFS_MOUNT_POSIXACL 0x100000 /* mirror of SB_POSIXACL in mnt_cifs_flags */
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#define CIFS_MOUNT_CIFS_BACKUPUID 0x200000 /* backup intent bit for a user */
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#define CIFS_MOUNT_CIFS_BACKUPGID 0x400000 /* backup intent bit for a group */
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#define CIFS_MOUNT_MAP_SFM_CHR 0x800000 /* SFM/MAC mapping for illegal chars */
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#define CIFS_MOUNT_USE_PREFIX_PATH 0x1000000 /* make subpath with unaccessible
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* root mountable
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*/
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#define CIFS_MOUNT_UID_FROM_ACL 0x2000000 /* try to get UID via special SID */
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#define CIFS_MOUNT_NO_HANDLE_CACHE 0x4000000 /* disable caching dir handles */
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#define CIFS_MOUNT_NO_DFS 0x8000000 /* disable DFS resolving */
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struct cifs_sb_info {
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struct rb_root tlink_tree;
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spinlock_t tlink_tree_lock;
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struct tcon_link *master_tlink;
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struct nls_table *local_nls;
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unsigned int bsize;
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unsigned int rsize;
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unsigned int wsize;
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unsigned long actimeo; /* attribute cache timeout (jiffies) */
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atomic_t active;
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kuid_t mnt_uid;
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kgid_t mnt_gid;
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kuid_t mnt_backupuid;
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kgid_t mnt_backupgid;
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umode_t mnt_file_mode;
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umode_t mnt_dir_mode;
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unsigned int mnt_cifs_flags;
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char *mountdata; /* options received at mount time or via DFS refs */
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struct delayed_work prune_tlinks;
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struct rcu_head rcu;
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/* only used when CIFS_MOUNT_USE_PREFIX_PATH is set */
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char *prepath;
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/*
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* Path initially provided by the mount call. We might connect
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* to something different via DFS but we want to keep it to do
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* failover properly.
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*/
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char *origin_fullpath; /* \\HOST\SHARE\[OPTIONAL PATH] */
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};
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#endif /* _CIFS_FS_SB_H */
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