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| author | kib <kib@FreeBSD.org> | 2016-11-11 20:24:54 +0000 |
|---|---|---|
| committer | kib <kib@FreeBSD.org> | 2016-11-11 20:24:54 +0000 |
| commit | 1221d1e004b5b249b7ec570fe42f267670558108 (patch) | |
| tree | 4e7893c63d223833c7bed315962c5cb0d501b524 /sys/fs | |
| parent | 00b3aa4c6964c86b8261bade6196919ae689a9db (diff) | |
| download | FreeBSD-src-1221d1e004b5b249b7ec570fe42f267670558108.zip FreeBSD-src-1221d1e004b5b249b7ec570fe42f267670558108.tar.gz | |
MFC r308027:
Use buffer pager for msdosfs.
For now, on stable/11, default is to use generic getpages() as before.
Diffstat (limited to 'sys/fs')
| -rw-r--r-- | sys/fs/msdosfs/msdosfs_vnops.c | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/sys/fs/msdosfs/msdosfs_vnops.c b/sys/fs/msdosfs/msdosfs_vnops.c index b7de76e..b720387 100644 --- a/sys/fs/msdosfs/msdosfs_vnops.c +++ b/sys/fs/msdosfs/msdosfs_vnops.c @@ -62,11 +62,13 @@ #include <sys/namei.h> #include <sys/priv.h> #include <sys/stat.h> +#include <sys/sysctl.h> #include <sys/unistd.h> #include <sys/vnode.h> #include <vm/vm.h> #include <vm/vm_extern.h> +#include <vm/vnode_pager.h> #include <fs/msdosfs/bpb.h> #include <fs/msdosfs/direntry.h> @@ -97,6 +99,7 @@ static vop_rmdir_t msdosfs_rmdir; static vop_symlink_t msdosfs_symlink; static vop_readdir_t msdosfs_readdir; static vop_bmap_t msdosfs_bmap; +static vop_getpages_t msdosfs_getpages; static vop_strategy_t msdosfs_strategy; static vop_print_t msdosfs_print; static vop_pathconf_t msdosfs_pathconf; @@ -1798,6 +1801,38 @@ msdosfs_bmap(struct vop_bmap_args *ap) return (0); } +SYSCTL_NODE(_vfs, OID_AUTO, msdosfs, CTLFLAG_RW, 0, "msdos filesystem"); +static int use_buf_pager = 0; +SYSCTL_INT(_vfs_msdosfs, OID_AUTO, use_buf_pager, CTLFLAG_RWTUN, + &use_buf_pager, 0, + "Use buffer pager instead of bmap"); + +static daddr_t +msdosfs_gbp_getblkno(struct vnode *vp, vm_ooffset_t off) +{ + + return (de_cluster(VTODE(vp)->de_pmp, off)); +} + +static int +msdosfs_gbp_getblksz(struct vnode *vp, daddr_t lbn) +{ + + return (VTODE(vp)->de_pmp->pm_bpcluster); +} + +static int +msdosfs_getpages(struct vop_getpages_args *ap) +{ + + if (use_buf_pager) + return (vfs_bio_getpages(ap->a_vp, ap->a_m, ap->a_count, + ap->a_rbehind, ap->a_rahead, msdosfs_gbp_getblkno, + msdosfs_gbp_getblksz)); + return (vnode_pager_generic_getpages(ap->a_vp, ap->a_m, ap->a_count, + ap->a_rbehind, ap->a_rahead, NULL, NULL)); +} + static int msdosfs_strategy(struct vop_strategy_args *ap) { @@ -1898,6 +1933,7 @@ struct vop_vector msdosfs_vnodeops = { .vop_access = msdosfs_access, .vop_bmap = msdosfs_bmap, + .vop_getpages = msdosfs_getpages, .vop_cachedlookup = msdosfs_lookup, .vop_open = msdosfs_open, .vop_close = msdosfs_close, |
