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authorAl Viro <viro@zeniv.linux.org.uk>2015-06-18 02:18:54 -0400
committerAl Viro <viro@zeniv.linux.org.uk>2015-07-06 17:39:44 -0400
commita138b4b688c10eb82044451b81534c382d1cddbd (patch)
treed5a9aeb84133d5c61ebbe7a1ca05e55e65880328 /fs/ufs
parenta96574233c5d2e50736d83abf65161ec5fa55852 (diff)
downloadlinux-a138b4b688c10eb82044451b81534c382d1cddbd.tar.bz2
ufs: unify the logics for collecting adjacent data blocks to free
open-coded in several places... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/ufs')
-rw-r--r--fs/ufs/inode.c56
1 files changed, 22 insertions, 34 deletions
diff --git a/fs/ufs/inode.c b/fs/ufs/inode.c
index 480c34ee1805..39de7782b7c5 100644
--- a/fs/ufs/inode.c
+++ b/fs/ufs/inode.c
@@ -960,6 +960,22 @@ void ufs_evict_inode(struct inode * inode)
ufs_free_inode(inode);
}
+struct to_free {
+ struct inode *inode;
+ u64 to;
+ unsigned count;
+};
+
+static inline void free_data(struct to_free *ctx, u64 from, unsigned count)
+{
+ if (ctx->count && ctx->to != from) {
+ ufs_free_blocks(ctx->inode, ctx->to - ctx->count, ctx->count);
+ ctx->count = 0;
+ }
+ ctx->count += count;
+ ctx->to = from + count;
+}
+
#define DIRECT_BLOCK ((inode->i_size + uspi->s_bsize - 1) >> uspi->s_bshift)
#define DIRECT_FRAGMENT ((inode->i_size + uspi->s_fsize - 1) >> uspi->s_fshift)
@@ -970,7 +986,7 @@ static void ufs_trunc_direct(struct inode *inode)
struct ufs_sb_private_info * uspi;
void *p;
u64 frag1, frag2, frag3, frag4, block1, block2;
- unsigned frag_to_free, free_count;
+ struct to_free ctx = {.inode = inode};
unsigned i, tmp;
UFSD("ENTER: ino %lu\n", inode->i_ino);
@@ -978,9 +994,6 @@ static void ufs_trunc_direct(struct inode *inode)
sb = inode->i_sb;
uspi = UFS_SB(sb)->s_uspi;
- frag_to_free = 0;
- free_count = 0;
-
frag1 = DIRECT_FRAGMENT;
frag4 = min_t(u64, UFS_NDIR_FRAGMENT, ufsi->i_lastfrag);
frag2 = ((frag1 & uspi->s_fpbmask) ? ((frag1 | uspi->s_fpbmask) + 1) : frag1);
@@ -1015,7 +1028,6 @@ static void ufs_trunc_direct(struct inode *inode)
ufs_free_fragments(inode, tmp + frag1, frag2);
mark_inode_dirty(inode);
- frag_to_free = tmp + frag1;
next1:
/*
@@ -1030,21 +1042,11 @@ next1:
ufs_data_ptr_clear(uspi, p);
write_sequnlock(&ufsi->meta_lock);
- if (free_count == 0) {
- frag_to_free = tmp;
- free_count = uspi->s_fpb;
- } else if (free_count > 0 && frag_to_free == tmp - free_count)
- free_count += uspi->s_fpb;
- else {
- ufs_free_blocks (inode, frag_to_free, free_count);
- frag_to_free = tmp;
- free_count = uspi->s_fpb;
- }
+ free_data(&ctx, tmp, uspi->s_fpb);
mark_inode_dirty(inode);
}
- if (free_count > 0)
- ufs_free_blocks (inode, frag_to_free, free_count);
+ free_data(&ctx, 0, 0);
if (frag3 >= frag4)
goto next3;
@@ -1102,8 +1104,7 @@ static void ufs_trunc_branch(struct inode *inode, unsigned *offsets, int depth2,
ubh_mark_buffer_dirty(ubh);
}
} else {
- u64 frag_to_free = 0;
- unsigned free_count = 0;
+ struct to_free ctx = {.inode = inode};
for (i = from; i < uspi->s_apb; i++) {
void *ind = ubh_get_data_ptr(uspi, ubh, i);
@@ -1115,23 +1116,10 @@ static void ufs_trunc_branch(struct inode *inode, unsigned *offsets, int depth2,
ufs_data_ptr_clear(uspi, ind);
write_sequnlock(&UFS_I(inode)->meta_lock);
ubh_mark_buffer_dirty(ubh);
- if (free_count == 0) {
- frag_to_free = tmp;
- free_count = uspi->s_fpb;
- } else if (free_count > 0 && frag_to_free == tmp - free_count)
- free_count += uspi->s_fpb;
- else {
- ufs_free_blocks (inode, frag_to_free, free_count);
- frag_to_free = tmp;
- free_count = uspi->s_fpb;
- }
-
+ free_data(&ctx, tmp, uspi->s_fpb);
mark_inode_dirty(inode);
}
-
- if (free_count > 0) {
- ufs_free_blocks (inode, frag_to_free, free_count);
- }
+ free_data(&ctx, 0, 0);
}
if (free_it) {
tmp = ufs_data_ptr_to_cpu(sb, p);