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| author | Miklos Szeredi | 2005-09-09 22:10:33 +0200 |
|---|---|---|
| committer | Linus Torvalds | 2005-09-09 23:03:46 +0200 |
| commit | db50b96c0f28a21c5a4a19ecaba12d0972aab06a (patch) | |
| tree | d7f2cb99de499c116ce08153a369044af0622c16 /fs/fuse/inode.c | |
| parent | [PATCH] FUSE: add padding (diff) | |
| download | kernel-qcow2-linux-db50b96c0f28a21c5a4a19ecaba12d0972aab06a.tar.gz kernel-qcow2-linux-db50b96c0f28a21c5a4a19ecaba12d0972aab06a.tar.xz kernel-qcow2-linux-db50b96c0f28a21c5a4a19ecaba12d0972aab06a.zip | |
[PATCH] FUSE - readpages operation
This patch adds readpages support to FUSE.
With the help of the readpages() operation multiple reads are bundled
together and sent as a single request to userspace. This can improve
reading performace.
Signed-off-by: Miklos Szeredi <miklos@szeredi.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'fs/fuse/inode.c')
| -rw-r--r-- | fs/fuse/inode.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/fs/fuse/inode.c b/fs/fuse/inode.c index 458c62ca0fec..0b75c73386e9 100644 --- a/fs/fuse/inode.c +++ b/fs/fuse/inode.c @@ -32,6 +32,7 @@ struct fuse_mount_data { unsigned rootmode; unsigned user_id; unsigned flags; + unsigned max_read; }; static struct inode *fuse_alloc_inode(struct super_block *sb) @@ -250,6 +251,7 @@ enum { OPT_DEFAULT_PERMISSIONS, OPT_ALLOW_OTHER, OPT_KERNEL_CACHE, + OPT_MAX_READ, OPT_ERR }; @@ -260,6 +262,7 @@ static match_table_t tokens = { {OPT_DEFAULT_PERMISSIONS, "default_permissions"}, {OPT_ALLOW_OTHER, "allow_other"}, {OPT_KERNEL_CACHE, "kernel_cache"}, + {OPT_MAX_READ, "max_read=%u"}, {OPT_ERR, NULL} }; @@ -268,6 +271,7 @@ static int parse_fuse_opt(char *opt, struct fuse_mount_data *d) char *p; memset(d, 0, sizeof(struct fuse_mount_data)); d->fd = -1; + d->max_read = ~0; while ((p = strsep(&opt, ",")) != NULL) { int token; @@ -308,6 +312,12 @@ static int parse_fuse_opt(char *opt, struct fuse_mount_data *d) d->flags |= FUSE_KERNEL_CACHE; break; + case OPT_MAX_READ: + if (match_int(&args[0], &value)) + return 0; + d->max_read = value; + break; + default: return 0; } @@ -329,6 +339,8 @@ static int fuse_show_options(struct seq_file *m, struct vfsmount *mnt) seq_puts(m, ",allow_other"); if (fc->flags & FUSE_KERNEL_CACHE) seq_puts(m, ",kernel_cache"); + if (fc->max_read != ~0) + seq_printf(m, ",max_read=%u", fc->max_read); return 0; } @@ -453,6 +465,9 @@ static int fuse_fill_super(struct super_block *sb, void *data, int silent) fc->flags = d.flags; fc->user_id = d.user_id; + fc->max_read = d.max_read; + if (fc->max_read / PAGE_CACHE_SIZE < fc->bdi.ra_pages) + fc->bdi.ra_pages = fc->max_read / PAGE_CACHE_SIZE; err = -ENOMEM; root = get_root_inode(sb, d.rootmode); |