From 0820e15a35b3cf37caadf550ddb7c75a7a77afd0 Mon Sep 17 00:00:00 2001 From: Steve French Date: Mon, 23 Jan 2006 12:50:04 -0800 Subject: [CIFS] Do not zero non-existent iovec in SendReceive response processing. Could cause memory leak in some readpaths depending on what junk followed it in the stack. Signed-off-by: Steve French --- fs/cifs/transport.c | 1 - 1 file changed, 1 deletion(-) (limited to 'fs') diff --git a/fs/cifs/transport.c b/fs/cifs/transport.c index 7b98792150ea7e..b12cb8a7da7c87 100644 --- a/fs/cifs/transport.c +++ b/fs/cifs/transport.c @@ -498,7 +498,6 @@ SendReceive2(const unsigned int xid, struct cifsSesInfo *ses, else *pRespBufType = CIFS_SMALL_BUFFER; iov[0].iov_len = receive_len + 4; - iov[1].iov_len = 0; dump_smb(midQ->resp_buf, 80); /* convert the length into a more usable form */ -- cgit 1.2.3-korg From 17cbbafe8e82bde4258e407ce043b61f4f9a350f Mon Sep 17 00:00:00 2001 From: Steve French Date: Tue, 24 Jan 2006 20:26:48 -0800 Subject: [CIFS] Make cifs default wsize match what we actually want to send (52K typically - header + 13 pages). Forgetting to set wsize on the mount command costs more than 10% on large write (can be much more) so this makes a saner default. We still shrink this default smaller if server can not support it. Signed-off-by: Steve French --- fs/cifs/connect.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) (limited to 'fs') diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c index 88f60aa520584a..eae306fa24b2f9 100644 --- a/fs/cifs/connect.c +++ b/fs/cifs/connect.c @@ -1785,7 +1785,15 @@ cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb, } else if(volume_info.wsize) cifs_sb->wsize = volume_info.wsize; else - cifs_sb->wsize = CIFSMaxBufSize; /* default */ + cifs_sb->wsize = + min(PAGEVEC_SIZE * PAGE_CACHE_SIZE, 127*1024); + /* old default of CIFSMaxBufSize was too small now + that SMB Write2 can send multiple pages in kvec. + RFC1001 does not describe what happens when frame + bigger than 128K is sent so use that as max in + conjunction with 52K kvec constraint on arch with 4K + page size */ + if(cifs_sb->rsize < PAGE_CACHE_SIZE) { cifs_sb->rsize = PAGE_CACHE_SIZE; /* Windows ME does this */ -- cgit 1.2.3-korg From eb9bdaa3f3b9d30d09bcad47037216aa39639b8e Mon Sep 17 00:00:00 2001 From: Steve French Date: Fri, 27 Jan 2006 15:11:47 -0800 Subject: Signed-off-by: Steve French --- fs/cifs/file.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) (limited to 'fs') diff --git a/fs/cifs/file.c b/fs/cifs/file.c index 77c990f0cb9817..d17c97d07c80e4 100644 --- a/fs/cifs/file.c +++ b/fs/cifs/file.c @@ -1190,7 +1190,6 @@ retry: /* BB what if continued retry is requested via mount flags? */ set_bit(AS_EIO, &mapping->flags); - SetPageError(page); } else { cifs_stats_bytes_written(cifs_sb->tcon, bytes_written); @@ -1198,6 +1197,13 @@ retry: } for (i = 0; i < n_iov; i++) { page = pvec.pages[first + i]; + /* Should we also set page error on + success rc but too little data written? */ + /* BB investigate retry logic on temporary + server crash cases and how recovery works + when page marked as error */ + if(rc) + SetPageError(page); kunmap(page); unlock_page(page); page_cache_release(page); -- cgit 1.2.3-korg From 1877c9ea66a29563987f22d0a86c66f438a87ce2 Mon Sep 17 00:00:00 2001 From: Steve French Date: Fri, 27 Jan 2006 18:36:11 -0800 Subject: [CIFS] Remove compiler warning Signed-off-by: Steve French --- fs/cifs/connect.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'fs') diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c index eae306fa24b2f9..e488603fb1e77f 100644 --- a/fs/cifs/connect.c +++ b/fs/cifs/connect.c @@ -1786,7 +1786,8 @@ cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb, cifs_sb->wsize = volume_info.wsize; else cifs_sb->wsize = - min(PAGEVEC_SIZE * PAGE_CACHE_SIZE, 127*1024); + min_t(const int, PAGEVEC_SIZE * PAGE_CACHE_SIZE, + 127*1024); /* old default of CIFSMaxBufSize was too small now that SMB Write2 can send multiple pages in kvec. RFC1001 does not describe what happens when frame -- cgit 1.2.3-korg From 9ad11ab48b1ad618bf47076e9e579f267f5306c2 Mon Sep 17 00:00:00 2001 From: Stephen Rothwell Date: Thu, 2 Feb 2006 16:11:51 +1100 Subject: [PATCH] compat: fix compat_sys_openat and friends Most of the 64 bit architectures will zero extend the first argument to compat_sys_{openat,newfstatat,futimesat} which will fail if the 32 bit syscall was passed AT_FDCWD (which is a small negative number). Declare the first argument to be an unsigned int which will force the correct sign extension when the internal functions are called in each case. Also, do some small white space cleanups in fs/compat.c. Signed-off-by: Stephen Rothwell Acked-by: David S. Miller Signed-off-by: Linus Torvalds --- fs/compat.c | 12 ++++++------ include/linux/syscalls.h | 6 +++--- 2 files changed, 9 insertions(+), 9 deletions(-) (limited to 'fs') diff --git a/fs/compat.c b/fs/compat.c index cc58a20df57a58..70c5af4cc2704d 100644 --- a/fs/compat.c +++ b/fs/compat.c @@ -73,17 +73,17 @@ asmlinkage long compat_sys_utime(char __user *filename, struct compat_utimbuf __ return do_utimes(AT_FDCWD, filename, t ? tv : NULL); } -asmlinkage long compat_sys_futimesat(int dfd, char __user *filename, struct compat_timeval __user *t) +asmlinkage long compat_sys_futimesat(unsigned int dfd, char __user *filename, struct compat_timeval __user *t) { struct timeval tv[2]; - if (t) { + if (t) { if (get_user(tv[0].tv_sec, &t[0].tv_sec) || get_user(tv[0].tv_usec, &t[0].tv_usec) || get_user(tv[1].tv_sec, &t[1].tv_sec) || get_user(tv[1].tv_usec, &t[1].tv_usec)) - return -EFAULT; - } + return -EFAULT; + } return do_utimes(dfd, filename, t ? tv : NULL); } @@ -114,7 +114,7 @@ asmlinkage long compat_sys_newlstat(char __user * filename, return error; } -asmlinkage long compat_sys_newfstatat(int dfd, char __user *filename, +asmlinkage long compat_sys_newfstatat(unsigned int dfd, char __user *filename, struct compat_stat __user *statbuf, int flag) { struct kstat stat; @@ -1326,7 +1326,7 @@ compat_sys_open(const char __user *filename, int flags, int mode) * O_LARGEFILE flag. */ asmlinkage long -compat_sys_openat(int dfd, const char __user *filename, int flags, int mode) +compat_sys_openat(unsigned int dfd, const char __user *filename, int flags, int mode) { return do_sys_open(dfd, filename, flags, mode); } diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h index fdbd436b24ccda..3877209d23c35e 100644 --- a/include/linux/syscalls.h +++ b/include/linux/syscalls.h @@ -559,12 +559,12 @@ asmlinkage long sys_newfstatat(int dfd, char __user *filename, struct stat __user *statbuf, int flag); asmlinkage long sys_readlinkat(int dfd, const char __user *path, char __user *buf, int bufsiz); -asmlinkage long compat_sys_futimesat(int dfd, char __user *filename, +asmlinkage long compat_sys_futimesat(unsigned int dfd, char __user *filename, struct compat_timeval __user *t); -asmlinkage long compat_sys_newfstatat(int dfd, char __user * filename, +asmlinkage long compat_sys_newfstatat(unsigned int dfd, char __user * filename, struct compat_stat __user *statbuf, int flag); -asmlinkage long compat_sys_openat(int dfd, const char __user *filename, +asmlinkage long compat_sys_openat(unsigned int dfd, const char __user *filename, int flags, int mode); #endif -- cgit 1.2.3-korg